BLACKSTRAP Men's Adjustable Back Bandanna Cashmere/Spandex/Polyamide Made in US The BS* Guarantee: 1 year manufacturers warranty covers seems and stitching, guaranteed no shrinking, fading or cracking on all pieces & prints. One size fits Kids to Adults. Days of frozen knots and unfunctional bandannas are over, we reinvented the bandanna for use in any adventure as well as offering new technologies NEVER before seen in the industry. Technical Features: SPF/UV Rated, 100% Breathable GUARANTEED NO FOG ON YOUR GOGGLES. Wind tested at -10 F and 60 MPH. Outer Fabric has 400% stretch in all directions allowing for zero restriction and multiple wearing applications. Our patented NAB (Nuts & Bolts) Velcro is something brand new. The velcro was taken from deep sea dive suits and then altered to fit our customers demand for water/freeze resistant velcro that would not get tangled in your hair or pile baselayers.