BlackStrap's APEX Tube "Neck" sheath sets the industry standard for performance, comfort and protection from the elements with BlackStrap's APEX thermal liner which is soft to the touch and makes it the go-to tube option. BlackStrap's hottest neck. »Skiers, «Snowboarders and snowmobilers have made the APEX Tube their go-to face mask for the coldest conditions because it's soft, warm and super functional. “Featuring 360-degree dual-layer protection and 4-way stretch fabric for “increased mobility and maximum helmet compatibility. »APEX tube« is »UPF 50+ (UV) rated« for sunlight.