Lashed Double Boa Crab Grab 2024 Snowboard Boots. The Lashed Double BOA features a performance rubber outsole and a 3D molded tongue plus evolution foam cushioning. Get with the same reliable fit, medium flex, and support you’ve come to expect from the Lashed with the added benefit of the Dual BOA Fit System featuring TX3 lace, approved and ridden by our riders.