The Concealable RPCM® Cool Vest is a cooling vest designed for individuals with Multiple Sclerosis or high-temperature occupations. Inserted into the Concealable RPCM Cool Vest is the RPCM Cool Pack, which offers cool relief for up to 2.5 hours, maintains a constant temperature of 59°F for those 2.5 hours, recharges in 20 minutes in icy water, is non-toxic and non-hazardous. The Concealable RPCM® Cool Vest is made of a cotton blend, can be worn directly against the skin, is almost fully concealed under outer garments, is over the shoulder and side strap adjustable, does not have a zipper. To recharge, put the RPCM Cool Packs in icy water for 20 minutes, or keep them in the refrigerator or freezer so they are always ready. COLOR: White. WEIGHT: Less than 5 pounds. DIMENSIONS: Concealable RPCM Cool Vest: Width: 14.5 inches across from left to right when lying down (sides are open and have Velcro and elastic straps for adjustability). Length: 18 inches long from shoulder to bottom seam and 15 inches long from center of neck area to bottom seam (scoop neck design). Chest Size: 32 inches - 44 inches (approx.); RPCM Cool Packs (set of 4): 13 inches x 5 inches.