We fully redesigned the Aurora GTX BOA® boot for riders facing both high speed trails & backcountry powder, with increased insulation to achieve greater warmth. The outsole is highly durable & designed for walking comfort, & the BOA® lacing system ensures precise fit. Features Gore-tex guaranteed to keep you dry 800 grams 3m™ thinsulate™ water resistant insulation michelin® rubber outsole for durability boa® h 3 coiler system boa® ss 2 lace for durability new dial offers better grip open lacing system sheds debris moisture wicking breathable liner half-size insert for optimal fit removable moisture wicking ortholite insole durable midsole with walking comfort gore-tex membrane keeps insulation dry scratch rubber toe & heel reinforcement lower d-ring to prevent cuff rising