Boss Tactical collars are made from heavy duty materials and constructed to last. Our collars use ultra strong zinc alloy clips, stainless steel D-rings, comfortable neoprene inner liner and strength tested to last with our lifetime warranty. Our rugged tactical look, combined with fitted comfort, make Boss Tactical collars the perfect choice for your boss dog! Treat Your Pet, Like a Boss. Made from heavy duty materials and constructed to last Ultra strong zinc alloy clips, stainless steel D-rings, comfortable neoprene inner liner and strength tested to last Lifetime warranty Our rugged tactical look combined with fitted comfort Small is 1.2 wide and 13-16 around Medium is 1.5 wide and 15-18 around Large is 1.5 wide and 17-22 around Extra-Large is 2 wide and 20-28 around