BLOC Boa B05 Snow goggles. The high-performance BLOC Boa goggle offers a compact frame shape with the XT DAF anti-fog spherical dual lens. Like all BLOC goggles it features an integrated venting system and Tri-Fleece, injected Thermo Face Foam and is maximum UV protected. The helmet compatible elasticated headband is fully adjustable for the perfect fit. They are perfect for winter sports and include a soft microfiber case for storage, so where ever you are headed the Boa can come with you. Maximum UV protection. Lens venting. Helmet compatible. Tri layer moisture wicking fleece. Dual adjustment strap. Anti fog lens.