10 Best Road Bike Helmet Under 100 of December 2025

• 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

• This schwinn thrasher lightweight helmet is designed for adults; suggested age range: 14 years old and up; suggested head circumference: 22.88 to 24.5 inches
• Schwinn 360° comfort pairs a dial adjustable fit system with full range padding for the perfect customized, comfortable fit
• Lightweight, three piece microshell enhances durability without weighing you down
• 20 top air vents provide crucial ventilation on hot summer rides
• Adjustable side straps allow you to fine tune fit and comfort and detachable visor helps reduce glare
• Dial fit adjustable system adds ease
• 21 flow vents to keep you cool
• Visor offers increased shade while riding
• Fits ages 14 plus adult

Schwinn

• CPSC&CE Certified and Rear light for Safety; Kingbike Helmets Meet CPSC&CE Certerfiaction and Equip with 3 modes Helmet Led Rear light for safety(Always On,Fast Flash,Slow Flash)
• Ultra Lightweight for Comfortable; Only 0.49lb In-Mold polycarbonate shell with EPS liner,It very comfortable to wear
• Ample Ventilation; 24 Vents keep Ample Ventilation for ultimate temperature regulation and reducing resistance
• Adjustable dial to customize fit; Fits head sizes(M/L) 56-60cm,(L/XL)59-63cm
• Portable Helmet Bag and Visor;Come with Visor Protected from sun, while The portable Helmet backpack is convenient for you carry it

KINGBIKE

• PASS CPSC & CE CERTIFIED - This GROTTICO bike helmet meets US & EU cycling standards.
• ADJUSTABLE DIAL & STRAPS - The adjustable fit system for men and women. 2 sizes for choice, suggested head circumference: M (55-58CM), L (59-61CM)
• INTEGRATED SAFETY REAR LIGHT - Bicycle helmet with USB rechargeable light. Best for night riding with 3 lighting modes, Steady, Flash and Wave.
• TOUGH & LIGHTWEIGHT - In-mold construction fuses a tough polycarbonate outer shell with the impact-absorbing foam liner. The fusion process makes in-mold helmets lighter and cooler than traditional helmets.
• KEEP YOUR HEAD COOL - 23 vents keep ample ventilation. Provide one more set of helmet replacement inner pads and two different color visors to collocation.

GROTTICO

• 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
• VENTILATION: 25 wind tunnel vents with internal channeling
• COMFORT: Easily adjust vertical position and tension with the Roc Loc 5 fit system
• LIGHTWEIGHT: In-mold construction

Giro

• 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: 22 vents
• RUGGED: In-mold construction

Giro

• 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
• COMFORT: Easily adjust vertical position and tension with the Roc Loc 5.5 fit system
• VENTILATION: 32 Wind Tunnel vents with internal channeling
• LIGHTWEIGHT: In-mold construction

Giro

• SUPERIOR TECHNIQUE FOR YOUR SAFETY. We follow 3 crucial steps to achieve a solid constructed bicycle helmet by first placing the exterior shell in the mould, then reinforcing it with a skeleton and finally adding the foam that will hold all the parts firmly connected, thus making sure you are safe in case of an accident.
• PROTECTED, VENTED AND COOL. Everything the cyclist in you could ask for: shock absorption technology, 22 massive air vents for an outstanding airflow across the head and a low profile, innovative design! And all this comes with a helmet that weighs only 0.6 lb in the S/M size and 0.63 lb in the M/L size.
• ALL ACCESSORIES INCLUDED. This specialized bike helmet for adults and teens has all the added features you need: sleek matte design for a classy look, detachable visor that offers constant protection from the elements, washable pads and a cushioned chin strap for increased comfort! Cycling has just become safer, more comfortable & more fun!
• A HELMET THAT ACTUALLY FITS. Adjusts in seconds with a quick release chin strap and a dial fit at the back adjustable horizontally for a tighter, snugger fit and vertically so ladies can pass the ponytail. The helmet size chart image will let you know if Airflow Size S/M or M/L is the one for you (We don't have XL). If it's a fit don't hesitate to order it and turn this cycle helmet into your best friend along with your bike: cruiser, city, commuter, road, electric, triathlon or mountain bike.
• 2-YEAR MANUFACTURER WARRANTY to make this the perfect companion for mtb racing, commutes to work or pleasure rides. Take advantage of this risk-free purchase and invest in your safety…and your looks.

TeamObsidian

• Super-ventilated: ACE II utilizes the Venturi Effect via an air channeling system that pulls in cool air in from the top and pushes heat out through the rear exhaust system, perfect for any length group ride or sportive year round.
• Aerodynamic Advantage: Droplet shape offers extremely low aerodynamic drag regardless of rider position.
• Comfort: Removable internal padding was designed for easy maintenance and enhanced fit for both men and women.
• Ultralight and Strong: Low and high speed impact-tuned EPS construction and toughened polycarbonate shell.(Complies with CPSC Bike and CE.EN1078 safety standards)
• Highly Adjustable: Suitable For Head Circumference from 22 to 24.5 inches, BASE CAMP ACE II Helmet fits most standard adult sizes thanks the RTS Fit System.Please measure your circumference above eye brows with a tape measure or string to get your head size and make the right purchase.

BASE CAMP

• MARKET-LEADING PROTECTION: Engineered in Giro’s category-leading helmet test lab
• INTEGRATED MIPS: Utilizes the Multi-Directional Impact Protection System to redirect energy in a crash
• VENTILATION: 18 Wind Tunnel vents with internal channeling
• RUGGED: In-mold construction
• UNIVERSAL FIT SIZING: Get the right fit, straight out of the box

Giro