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Amajoradvancementin the protection against cycling-related head injuries Bontrager XXX WaveCel delivers high-performance protection and the best in aerodynamics and comfort. XXX is the WaveCel helmet of choice for the Trek-Segafredo men's and women's teams. WaveCel is a collapsible cellular structure that lines the inside of the helmet. This Bontrager-exclusive technology disrupts the safety standards the industry has accepted for over 30 years. Product details WaveCel advanced helmet technology The Boa® System lets you easily secure and adjust helmet fit with just one hand Easy-to-use adjustable strap dividers allow for a fine-tuned fit An aerodynamic shape helps you outsmart the wind and ride faster Additional NoSweat pad with silicone channel keeps sweat out of eyes for constant clarity Team Trek-Segafredo sticker kit included with Viper Red, White, and Radioactive Yellow colorways Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership