10 Best Triathlon Helmet of October 2025

• Safety and Protection: This road bike helmet is IN-MOLD construction and US CPSC safety standards certified. Abrasion resistant PC outer shell slip and slide in event of crash to minimize the risk of torsion injuries, While impact forces are absorbed maximumly by thickened EPS foam inside. your head is protected fully
• Detachable Lens: Detachable magnetic goggles(UV Protection) avoids eyes from glare and offers full clear vison front in daytime. It stay firmly on helmet when it on(never been blew off) and It can be flipped up or remove by one hand easily, NO DISCOMFORT WITH CYCLING/PRESCREPTION GLASSES ON UNDER THIS GOGGLES(wear your own glasses firstly before you put on this eye shield).The spare lens: Yellow(nighttime use) and Rainbow(daytime use) are available to purchase
• Optimal Ventilation and Comfort: To realize the optimal ventilation on a helmet that is not only a conventional road helmet but also a TT helmet, The 8 air vents and air flow channels inside is designed with shortened airflow tail shaped on base of aerodynamics . Air flow(in and out) are regulated and balanced by vents and tail to interact to cool down the temperature around head, making the experience of cycling is fatigue-free and comfortable
• Lightweight: With shortened airflow tail shaped and Goggles, This bicycle helmet is 340g. Sense of weight-bearing is barely noticed on head because of the lightweight and durable material. Cycling is kind of sports with physical strength demanding, especially for a long distance race. Neck pain or strain always result in tough and laborious experience. This helmet is the one lightweight and durable you need
• Adjustment Retention System: Dial fit retention system can be adjusted to fit head circumference 22.05-24.01 inches(Adult Size 56-61 cm). To secure perfect fit of helmet on your head, please measure your head circumference correctly before purchasing.

Exclusky

• ONE SIZE: Fits head circumference from 21 to 23 inches (54-58 cm) - PLEASE MEASURE YOUR HEAT FOR A PERFECT FIT! PLEASE NOTE THAT THIS IS NOT A VERY BIG HELMET (8.5" x 12.5"). If you have a bigger head this helmet will NOT fit you!
• VISOR: The magnetically fastened shield provides wraparound eye (UV) protection and it’s easy to flip up or remove with one hand when appropriate. (PLEASE NOTE: The visor can only be attached while wearing the helmet (NOT BEFORE YOU ARE PUTTING ON THE HELMET) and can only be detached while you are wearing the helmet - YOU CAN NOT TAKE THE HELMET OFF WITH THE VISOR ATTACHED TO IT). WEARING THE HELMET WITH VISOR WILL BE A TIGHT FIT AND THIS SETUP MAY NOT FIT A LARGER SIZE HEAD OR FACIAL FEATURES.
• KEEPING YOU COOL: Your aero cycling helmet is equipped with a total of 8 vents: 4 in the front and 4 in the back, offering optimal airflow and minimal wind resistance to keep you cool during a race and stay more comfortable without sweat all over the head.
• FEATHERWEIGHT: With a helmet weight of 279 gms (with shield) you'll soon forget that you've even got a helmet on your head- until you need it! This helmet is about 25% lighter and smaller ( 8.5" x 12.5") than other aero helmets.
• HARDSHELL: Tough on the outside, soft on the inside, just like nature intended. Our low friction, abrasion resistant PET outer shell is designed to slip and slide in the event of a crash; helping to minimize the risk of torsion injuries. This helmet is CSPC certified.

SLS3

• 【Safety Protection】- Basecamp Bike Helmets for men/women with high-density imported PC+EPS Foam, CPSC&CE Safety Standard will surely improve safe performance. In-molding technology joins thick EPS foam core and the outer polycarbonate shell to ensure better shock absorption in all direction, giving you the best protection when road cycling or mountain biking.
• 【LED Safety Light】- Bicycle Helmets LED rare light with 3 lighting modes - steady, slow flashing and fast flashing, warn Cars and help other riders behind you clearly recognized your direction, brighter and safer in night cycling. An extra spare battery is also included as bonus.
• 【Detachable Magnetic Goggles】- Special cycling helmet with unique design, a magnetic visor shield in gray can be used as sunglasses provides eye protection UV400 and blocks the strong ultraviolet light/dust/wind/sand away from your face perfectly. Easy to flip up or remove with one hand when cycling, meets your 3 wearing needs-goggles up, goggles down and no goggles. (Your own glasses also can be worn under goggles)
• 【Adjustable Size System】- Easy-use Dual Fit adjustable design, an adjusting knob at the back of the adult helmet and adjustable strap make it adjustable and suitable for different head size 22.44’’-24.41’’/57- 62cm, meeting the needs of most cycling riders both men and women.
• 【Super Comfortable&Convenient】- Biking Helmet in special aerodynamic design is super lightweight 0.56-0.58lbs, with 28 breathable vents, detachable and washable liner padding, effectively reduce air resistance, sweating, and keep cyclist cool. An extra portable carrying backpack is included as bonus.

Basecamp

• MARKET-LEADING PROTECTION: Engineered in Giro’s category-leading helmet test lab
• FAST: TransformAir Technology reduces drag and provides aerodynamic efficiency.
• INTEGRATED MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash
• VIVID SHIELD: Fully magnetic for easy on/off plus VIVID lens technology and Optics by Zeiss that increases contrast and definition while keeping colors true to life
• VENTILATION AND COMFORT: Roc Loc Air suspends the helmet just slightly off the top of the head allowing airflow to pass over the head and exhaust from the rear. Easily adjust vertical position and tension with the Roc Loc 5 fit system

Giro

• SMALLER AIR RESISTANCE: ROCK BROS Newest road bike aero helmet, teardrop shape provides a best aerodynamic efficiency and ensure the air flow more smoothly. In the Wind Tunnel Testing, ROCK BROS aero helmet get a excellent performance. Comparison with ordinary road bike helmet, this aero helmet have more than 40% decrease of air resistance.
• EXCELLENT HEAT DISSIPATION: Comfortable temperature from excellent heat dissipation. Called "FORCED AIR COOLING", A wider vent in the front of helmet working with 4 deep internal channels insides are the best combination of aerodynamics and ventilation, which can aspirate more cool air to keeping the comfortable temperature, give you a enjoyable cycling experience.
• SAFETY CONSTRUCTION: Aero helmet is made of Multi-Density EPS and high toughness PC shell with Integral Moulding Technology. Because of this well impact toughness material, helmet protection system can work great while hitting.
• EASY-USE ADJUSTMENT SYSTEM: The latest magnetically helmet fastener, side strap adjust button and size adjust dial make up the easy-use adjustment system, which is good for the helmet adjust to different head size and more suitable for both men and women. (Suitable For Head Circumference from 22 to 24 inches)
• COMFORTABLE & DETACHABLE PAD: Detachable and washable pad design for increased comfort and absorb sweat. Also you don't need worry about pad getting wet, good gas permeability can keep pad clean and no peculiar smell.

ROCK BROS

• SMALLER AIR RESISTANCE: Designed in the best smooth shape we called " Angel's Tear ", has a very stylish appearance and streamlined body. No mater in Triathlon or other bicycle race, this aero bike helmet would not weak than other racing helmet. What's more, the fashion design make it more popular in cycling lover
• DURABLE & SAFE: Adopting Multi-Density EPS technology and high intensity PC, helmet has many excellent characteristics of toughness, intensity and deformation resisting, can protect your head from kind of impacts.
• COMFORTABLE & HUMANIZATION: Upgrade "U shape" side straps instead of old "V shape" side straps, aero helmet side straps would never hinder your ears, more comfortable to wear it. Besides, we add reflective straps on the side straps, provide a safe night cycling
• DETACHABLE & WASHABLE PAD: Comparing with other helmet pads, our cycling helmet pads are more bigger and thicker which is more suitable and comfortable for long time using. At the same time, adopting the detachable and washable pad, keep your helmet clean for a long time.
• SUITABLE & ADJUSTABLE SIZE SYSTEM: Adjustable size: 22.4 - 24.4 inch, about 6 inch adjust side strap, fit mens, womens and youths.

ROCK BROS

• MARKET-LEADING PROTECTION: Engineered in Giro’s category-leading helmet test lab
• MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash
• UNIVERSAL FIT SIZING: Get the right fit, straight out of the box
• VENTILATION: 24 vents

Giro

• MARKET-LEADING PROTECTION: Engineered in Giro’s category-leading helmet test lab
• FAST: Record-breaking speed and aerodynamic efficiency
• MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash
• VIVID SHIELD: Fully magnetic for easy on/off plus VIVID lens technology and Optics by Zeiss that increases contrast and definition while keeping colors true to life
• VENTILATION AND COMFORT: Roc Loc Air suspends the helmet just slightly off the top of the head allowing airflow to pass over the head and exhaust from the rear. Easily adjust vertical position and tension with the Roc Loc 5 fit system

Giro

• 【USB Rechargeable Rare Light】- Built-in USB rechargeable back light, mountain bike helmet guarantees the highest possible protection and visibility on city roads. 3 lighting modes - steady, slow flashing and fast flashing Warn Cars and help other riders behind you clearly recognized your direction, safer and brighter in night cycling. Soft button make it easier to turn on/off the light. Extra USB cable is also included.
• 【Safety Protection】- Shinmax bicycle helmet meets US CPSC Standard. In-molding technology joins thick EPS foam core and the outer polycarbonate shell to ensure better shock absorption, which will surely give you the maximum protection in all directions when road cycling or mountain biking.
• 【Removable Magnetic Goggles in Gray】- Cycling helmet with a unique magnetic goggles visor shield provides eye protection and blocks the sun and dust perfectly away from your face, your own glasses also can be worn under goggles. Easy to flip up or remove with one hand when cycling/climbing, a cycle helmet meets your 3 wearing needs-goggles up, goggles down and no goggles. Your style bike helmet is designed by yourself.
• 【Adjustable Size&Super Comfortable】- Bicycle helmet in special aerodynamic design 350g/0.77lbs super lightweight no more burden; 28 breathable vents effectively reduce air resistance and reduce sweating; Dual Fit adjustable design - adjusting knob at the back of the adult helmet helps to adjust the head circumference. Adjustable Size: 55cm-63cm/21.65’’-24.80’’ meet the needs of most cycling riders both men and women.
• 【Removable Lining and Portable Bag】Removable liner pads make it easy to clean and keep fresh smelling helmet and keep bugs out of your hair. And an extra portable carrying bag is very convenient for you to carry the helmet outside or for easy storage. (We provides after-sales service to solve problems for you, accept returns and exchanges within 30 days, your risk is borne by Basecamp Cycling)

Shinmax

• 【Safety Protection】- Shinmax/Basecamp bike helmets CPSC & CE Certified with tough and durable poly-carbonate shell and EPS foam, helps slow down the impact and provide your head with maximum protection and comfortability in all directions during crash.
• 【Adjustable Size Function】- Bicycle helmet for men with Dual Fit adjustable design, adjusting knob at the back of the bike helmet and side straps helps to adjust the size to fit different head circumference 52cm-59cm/20.47’’-23.23’’ (NOT for large). Please measure your circumference above eye brows with a tape measure or string to get your head size and make the right purchase.
• 【Detachable Magnetic Goggles】- Unique magnetic visor shield design can be used as sunglasses, not only protect your face against wind and sand, but also block the strong ultraviolet light, UV400 protection. Bicycle helmet with 3 strong magnet, make the goggles shield can be flipped up or down, which not interfere with wearing your own glasses.If you need to buy a gray visor separately, pls search “B083NL66C4”, clear visor is “B07HFVRDP6”, yellow visor is “B083NJZTJ4”.
• 【Ventilation 7 Holes】- Streamlined design, adult helmet in special aerodynamic design and 7 breathable vets, effectively reduce air resistance and reduce sweating. Super lightweight 310g (0.68 lb) bike helmet no more burden, keep staying cool and comfortable.
• 【Bonus-Carrying Bag&After-Sales Service】- An extra portable backpack is included as bonus,to store bike helmet,which bring you a more convenient riding experience if you need to buy a bag separately, please search “B07PM9M8YC”.(SHINMAX provides after-sales service to solve problems for you, accept returns and exchanges within 30 days. Your risk is borne by Basecamp Cycling!

Shinmax