ThirtyTwo Women's STW Double BOA® Snowboard Boots Snow 2025-2026 The STW Double BOA® has the same great comfort and easy flex but now with zonal lockdown control. Dual BOA® Fit System allows you to lock in your forefoot and control upper stability independently. BOA® Fit System delivers micro-adjustable, precision fit, engineered to perform in the toughest conditions. Fit: Comfort Lacing: BOA ® Fit System Footbed: Comfort Flex: Soft 5/10 1:1 Lasting 3D Molded Tongue Cozy Cuff Dual BOA ® Fit System Integrated Internal Lacing Performance Rubber Outsole Grip & Rip Heel Hold