N Ferno Warming Packs, Hand, 6 1 2 in x 2 3 4 in, Non Woven Fabric Polyethylene no checkout 300 rpm Stock Status In 300 rpm Stock Status In Stock Thickness [Nom] 1 8 in Tool Shape Flexible Depressed Center Type Type 27 Used With Angle Grinders Welding Catalog NO Oversized ratchet with soft rubber grip allows for easy adjustment when wearing gloves Removable comfort cradle is a pivoting head pad that conforms to any head for the highest degree of comfort 3 position slider adjusts distance of the lens from your eyes for precise vision Crown strap adjustment allows the headgear to be raised or lowered for maximum comfort and performance Sweatband helps absorb perspiration and prevents sweat from interfering with vision just open the pack All natural ingredients heat up when they make contact with oxygen Seal from oxygen in resealable bag and reuse the next day Stays warm up to 5 hours To activate