CFF Weighted Short Vest (36 lbs) - Great for Cross Training, Running & Fireman Training This vest has a V taper and fully adjustable shoulders to allow for unrestricted breathing This makes it perfect for doing things such as pull ups, rope climbs and burpees Comes with iron blocks that allow for complete adjust-ability in weight in 3 -Pound increments; From 3 - 36 -Pound Padded shoulders and vest make it comfortable to wear