UVEX Uvision Junior Bicycle Helmet (52-57cm)

The IAS system in the Hawk features 22 ventilation openings and comes in two shell sizes. Individual Adapting System (IAS): With its ratcheting closure mechanism, and pivot points, the UVEX IAS 2-system provides a unique, three-dimensional, and micro-adjustable fit. The integrated strap system guide guarantees a good and tight fit. The IAS knob can be operated with one hand, while the helmet is on. The system also features a ventilated forehead with anti-allergic, washable cushion. Makrolon: Makrolon is a high-tech thermoplastic Polycarbonate (PC) material developed by Messrs, Bayer. UVEX is using this material for the production of PC lenses for goggles and sport glasses, and the shells of our inmold bike helmets. Inmold technology is where other helmets have their protective foam glued into the hard outer shell, in our inmold process, the foam is injected into a mold that is "lined" with the Makrolon outer shell. As a result, the foam is bonded to the outer shell. The result is a much more stable helmet, which allows UVEX to increase the size of the ventilation openings. Monomatic closure: Most helmets use a standard click-lock, and anyone who rides knows that the fit of the chin strap can change as you get moving and start to sweat. Until now, you had a choice: stop and fiddle with your straps, or ride with a loose strap. UVEX has solved that particular annoyance with a ratcheted design (similar to what you might find on a pair of bike shoes or in-line skates, only smaller). This allows you to fine-tune how tight the strap closes on the chin on the fly. The strap itself is a 16mm wide, non-fade, uv-resistant, light, smooth, and easy on the skin.