TechKewl Cooling Vest - Phase Change Tech that will change your mind about the heat! - BLUE-MD/LRG V-neck w/zipper closure - Hook and loop girth and shoulder adjustments 100% cotton vest, w/ thermal liner (excluding inserts) - One set of four Cool Pax inserts is included with each vest and one cooler bag Includes front / chest pockets Sizes: M/L (100-175lbs), L/XL (175-250 lbs), XXL (250-300 lbs) Total Weight (including 6665 Cool Pax): 6 lbs/2.7 kgs