How to Choose a Motorcycle Helmet in Taiwan: CNS 2396, the Inspection Mark, Helmet Types, and Sizing (安全帽)
Search for a helmet on Shopee Taiwan, and you will find listings priced from a few dozen to over a thousand NT dollars, all marked "CNS certified". Some models come in half-shell and 3/4 styles and a wide range of colors, making it easy to buy the wrong one. In Taiwan, a motorcycle helmet is a product that must be inspected by the Bureau of Standards, Metrology and Inspection (BSMI). The standard is CNS 2396, and the helmet must carry the commodity inspection mark and full Chinese labels. This guide explains the fine, how to read the mark, how helmet types and engine size relate, how to choose head size, and a checklist to run before you order on Shopee.
First, Understand Helmet Types and How Much They Protect
| Type (BSMI wording) | Features | What to watch for |
|---|---|---|
| Full-face | BSMI says it protects the widest area of the head: forehead, back of the head, both cheeks, and the jaw. It is the safest type | It is usually heavier and warmer. BSMI's document lists the full-face type under the "enhanced" class, which is for non-racing motorcycles over 125 cc |
| Open-face and half-open-face | These cover the top, back, and sides of the head and leave the face and jaw open, between a full-face and a half-shell | Shop terms like "3/4" and "snow cap" are popular names that do not always match the standard's wording, so look at the photos to see what is covered. The open-face type is also in the enhanced class |
| Half-shell | It is comfortable, cool, and easy to carry, but BSMI says it protects the smallest area, only the forehead and the upper part of the head | BSMI's document lists the half-shell and half-open-face types in the "ordinary" class, and says they are for non-racing motorcycles under 125 cc |
No single type is "the best". It depends on the engine size of your bike, where you ride, and how much coverage you want. The key points are that a larger covered area is safer, and that if your motorcycle is over 125 cc, the BSMI document says to choose the enhanced class (open-face or full-face), so not every type fits every bike. The types and limits above come from an explanatory document of a BSMI branch office and may not be the latest version, so before you order, check against BSMI notices and your vehicle's details. This page only explains how to choose and is not product safety advice.
5 Things to Check When Choosing a Motorcycle Helmet
| What to check | What to look at | A common problem |
|---|---|---|
| Inspection mark and its number | BSMI's consumer notice says to buy helmets with the commodity inspection mark attached. The mark consists of a symbol and an identification number, which begins with R, D, T, Q, or M. For example, an R-series number consists of the letter R followed by digits. The specification section of a Shopee listing usually shows a BSMI number too, so check it before you order and save a photo of it | The title says "CNS certified", but the specification section shows no number |
| Complete Chinese labeling | BSMI's inspection items include the Chinese label: the name of the maker or importer, the month and year of manufacture, the country of origin, the type and model of the helmet, and the size in cm. Check it again when the helmet arrives, and contact the seller first if something is missing | A nice box, but no label on the helmet itself |
| Helmet type and engine size | First confirm the engine size of your motorcycle. According to the BSMI document, the ordinary class (including half-shell) is for bikes under 125 cc, and bikes over 125 cc need the enhanced class (open-face or full-face). For a listing that says "3/4", confirm with the photos and the seller's reply | Buying a half-shell helmet and then finding that the bike's engine size exceeds the limit |
| Head size and chin strap | Measure your head with a soft tape around the forehead just above the eyebrows, and compare it with the shop's size table. For example, M is 54 to 58 cm and L is 59 to 62 cm. Once on, the helmet should not wobble left or right, the chin strap should fasten firmly, and it should not hurt | Too big, so the helmet wobbles at speed, or too small, so it causes a headache |
| Listing details and whether the price makes sense | On Shopee you can see helmets marked "CNS" at extremely low prices. A low price does not prove a helmet fails, but check the number and the labels even more carefully. Complete labels do not guarantee quality either: in a BSMI market test, a helmet had all the labels but failed the impact absorption test (the shell cracked by more than 2 mm) | Looking only at sales and reviews and not at the inspection details |
What to Do After You Get It
- Fasten the chin strap every time — Under the rule as quoted in media reports, a helmet that is worn wrongly or has an unfastened chin strap may also count as not wearing a helmet. Check that it is fastened all the way before every ride.
- Prepare a helmet for your passenger — The text of Article 31, paragraph 6 of the Road Traffic Management and Penalty Act is that a motorcycle rider or passenger who does not wear a helmet as required is fined NT$500, charged to the rider. So when you carry a passenger, their helmet must be ready too.
- Check first, then use it — When it arrives, check the mark, the number, and the Chinese label. The seller also advises filming the unboxing, which makes any problem easier to handle.
- Dry removable liners fully — After washing a removable liner, let it dry completely before putting it back and wearing it, to avoid a damp smell.
- Ask BSMI if you have doubts — If the mark is unclear or you suspect the helmet has not undergone inspection, you can ask the supplier for the inspection certificate, and if there is neither, report it to BSMI.
Before You Order, Check These
- Measure your head and compare it with the shop's size table. If unsure, ask the seller.
- Confirm the engine size of your motorcycle, then decide between half-shell, open-face, and full-face. A bike over 125 cc needs the enhanced class.
- The specification section should show a BSMI number. Take a screenshot of it.
- Look up the identification number in BSMI's commodity inspection service system. According to BSMI's briefing, for some M-series numbers you can only see the company name and no inspection record.
- When the helmet arrives, check the mark and the Chinese label again, and film the whole unboxing.
Searching on Shopee Taiwan: Chinese Keywords and What They Mean
Shopee Taiwan uses Chinese, so searching in English usually returns nothing useful. Copy the keywords below and paste them into the Shopee search box.
| Keyword / text (Chinese) | Pinyin | Meaning | What it is for |
|---|---|---|---|
| 安全帽 | ānquán mào | helmet | The most common search keyword |
| 半罩 3/4 罩 | bàn zhào / sì fēn zhī sān zhào | half-shell / 3/4 | Open styles with less coverage, shown on listings |
| 全罩 | quán zhào | full-face | The style with the widest coverage |
| CNS 認證 | CNS rènzhèng | CNS certification | Taiwan's national standard, often written in titles |
| 商品檢驗標識 | shāngpǐn jiǎnyàn biāoshì | commodity inspection mark | The mark that should be on the helmet |
| BSMI 字號 | BSMI zìhào | BSMI number | Often listed in the specification section |
| 頭圍 | tóuwéi | head circumference | Used for the size table, such as M and L |
| 鏡片 | jìngpiàn | lens / visor | Many half-shells come with a lens |
| 內襯可拆洗 | nèichèn kě chāixǐ | removable, washable liner | Makes the inside easier to keep clean |
| 扣具 下巴帶 | kòujù / xiàbā dài | buckle / chin strap | The fastening part, which should lock firmly |
| 排氣量 cc | páiqìliàng / cc | engine size / cc | Used to decide which helmet class suits your bike |
| 月銷熱賣 | yuè xiāo rèmài | best sellers this month | A sorting option in Shopee Taiwan search results (the display name may change), useful for finding what many people buy |
Brand names on packaging are usually written in Chinese too. If you are not sure, use your phone's camera translation (for example Google Translate) on the packaging or the product page and compare it with the table above. This list is only a keyword guide, not an official translation, and the text on a product page may differ.
Show this to the shop staff, or paste it into the Shopee chat
請問這頂的商品規格欄有檢驗標識或 BSMI 字號嗎？
Qǐngwèn zhè dǐng de shāngpǐn guīgé lán yǒu jiǎnyàn biāoshì huò BSMI zìhào ma?
Does this helmet's specification section show an inspection mark or a BSMI number?
請問 M 和 L 的頭圍範圍各是多少？
Qǐngwèn M hé L de tóuwéi fànwéi gè shì duōshǎo?
What head sizes are M and L?
請問這頂適合排氣量多少的機車？
Qǐngwèn zhè dǐng shìhé páiqìliàng duōshǎo de jīchē?
What engine size is this helmet meant for?
GRS 649 helmet, ultra-light, free shipping, Taiwan CNS safety certified, vents, fully washable liner, fits a 100 cc scooter storage box, half-shell / 3/4 style
Shopee listing details (shown on October 24, 2026; prices and promotions may change): rating 5.0, 1,125 reviews, 2,000+ sold (we only quote this and have not checked individual reviews); estimated delivery October 25 to October 31, shipping from $0, with Shopee's buyer protection and returns. Product details (stated by the listing, not independently verified by us): brand GRS; the helmet type is listed as half-shell (the title also says 3/4); sizes M (head circumference 54 to 58 cm) and L (59 to 62 cm); ABS shell; weight about 860±50 g with lens and liner. The description says "passed Taiwan CNS safety certification" and that the snap buckle "passed certification", that it can be used with an external Bluetooth headset, that the liner is a three-piece washable one, and that the rear vents have insect screens. There are eight colors in matte and gloss, and the lens can be tea-colored or swapped for dark. The specification section lists two numbers, "BSMI UC36891858" and "BSMI (C series) (M) C2 8113281". We have not looked them up in the BSMI system and do not judge whether they are valid, so please look them up yourself and rely on the mark and Chinese label on the helmet you receive. The seller also notes that convenience-store pickup has a size limit and two helmets should be ordered separately, that out-of-stock items take 7 to 15 working days, that you should film the unboxing, and that returns need the item unused with tags, film, covers, accessories, and gifts complete. Before you buy: it is listed as half-shell, which BSMI's document places in the "ordinary" class for non-racing motorcycles under 125 cc, so if your bike's engine is larger you need an enhanced-class helmet. The shop has several listings of the same helmet in other colors or listing dates, with different sales and prices. We do not give safety advice, and you should go by the listing page and the helmet itself.
Quick Checklist Before You Buy
- Did you measure your head? → Use a soft tape just above the eyebrows, compare it with the size table, and make sure the helmet does not wobble once it is on
- What is my bike's engine size? → Over 125 cc, choose the enhanced class (open-face or full-face), not a half-shell
- Is there an inspection mark and number? → Both the specification section and the helmet should show them, so take a screenshot or a photo
- Is the Chinese labeling complete? → Maker or importer, month and year of manufacture, country of origin, type and model, and size in cm
- Is the price unreasonably low? → For a helmet marked CNS at a very low price, check the number and labels even more carefully
Frequently Asked Questions
- How much is the fine for not wearing a helmet, or not fastening it?
- Article 31, paragraph 6 of the Road Traffic Management and Penalty Act says a motorcycle rider or passenger who does not wear a helmet as required is fined NT$500, charged to the rider. We did not find whether it adds demerit points, so go by the text of the law and police notices.
- Can I buy a low-priced helmet marked CNS on Shopee?
- A low price does not prove a helmet fails, but Shopee does show helmets marked CNS at extremely low prices, so be careful. At the least, confirm that the specification section shows a BSMI number, that the helmet carries the commodity inspection mark and Chinese labels, and look the number up in BSMI's system. Complete labels do not guarantee quality either, since BSMI's market test found a helmet with matching labels that failed impact absorption.
- Can I use a half-shell helmet on a motorcycle over 125 cc?
- According to an explanatory document of a BSMI branch office, the ordinary class (four shapes: half-shell, half-open-face, open-face, and full-face) is for non-racing motorcycles under 125 cc, and non-racing motorcycles over 125 cc must use the enhanced class, which has only the open-face and full-face shapes. This document may not be the latest, so please confirm the current rule with BSMI.
- How do I check the commodity inspection mark?
- BSMI has a commodity inspection service system, and its briefing demonstrates entering the identification number. For some M-series numbers, though, you can only see the company name and no inspection record. If the mark is unclear or you suspect the helmet has not undergone inspection, you can ask the supplier for the inspection certificate, and if there is neither, report it to BSMI. Follow the official system for the exact steps.