Choosing a helmet for road riding or mountain biking often comes down to weight, fit, and price. These two helmets sit on opposite ends of that equation: an ultralight pick with a straightforward design and a tech-packed Bontrager with a dial fit and built-in mount. Here's how to decide which one belongs on your head.
Quick Verdict
If you want a simple, light helmet for mixed road and MTB rides, go with the Ultralight Adult Bike Helmet. Its straightforward design makes it easy to grab and go. If you want a more advanced helmet with more features, the Bontrager Circuit WaveCel is the better pick. It's built for riders who want more from their helmet.
At a Glance
| Feature | Ultralight Adult Bike Helmet | Bontrager Circuit WaveCel |
|---|---|---|
| Price | USD 18.99 | USD 34.95 |
| Size | L (57-62 cm) | XL (60-66 cm) |
| Type | Road/MTB cycling | Road cycling |
| Key details | PC shell, EPS foam, approx. 205 g | WaveCel, BOA Fit System, Blendr mount, moisture-wicking pads |
When you line up the two helmets, the differences become clear. The Ultralight is a road/MTB crossover that keeps the feature list short. The Bontrager is road-specific and brings a range of comfort and integration features. Your choice really depends on how much you value adjustability and accessory options. If your rides are mostly on pavement, the Bontrager's road focus is a natural fit; if you like to mix in trails, the Ultralight's crossover design might appeal.
Where Each Helmet Wins
- The Ultralight Adult Bike Helmet is the simpler choice for riders who want basic coverage without extra features.
- The Bontrager Circuit WaveCel is the more capable choice for riders who want the extra features.
Product Notes
Ultralight Adult Bike Helmet (White/Dark Blue)
This helmet keeps things simple. It's designed for road and mountain biking, with a PC shell and EPS foam as the protective structure. The listed weight is approximately 205 g, so it's a strong pick if you want a lightweight lid without extra bulk. Its straightforward design means the focus is on essential protection. The White/Dark Blue colorway is a neutral match for a wide range of bikes. Riders who need more from a helmet can look to the Bontrager for those extras. If your rides are mostly about getting from place to place or hitting a local trail, this helmet gives you the core coverage without a long list of extras.
Bontrager Circuit WaveCel (Matte White, XL)
The Bontrager Circuit WaveCel is the more feature-rich option. It includes WaveCel technology, which is described as a collapsible cellular structure designed to help absorb energy from linear and rotational forces during certain cycling impacts. The BOA Fit System delivers a precise fit, and the Blendr magnetic mount works with compatible Bontrager lights or a GoPro-style camera. The XL size covers head circumferences of 60-66 cm, and moisture-wicking pads add comfort. Choose this helmet if you want a more adjustable fit and the ability to attach accessories without extra parts. The main drawback is the higher price - about $16 more than the Ultralight - and the XL sizing, which may not suit riders with smaller head sizes.
Final Choice by Use Case
If your priority is a simple, no-frills helmet for everyday rides, the Ultralight Adult Bike Helmet is the straightforward choice. If you want the more advanced model with a higher level of fit and features, the Bontrager Circuit WaveCel is the helmet to pick.
