(1) Jumbo Float 5.8ozs of buoyancy One Jumbo Float for StiX System Arms offers 5.8 ounces (160 grams) of buoyancy with a travel weight of 1.1 ounces (31 grams). 2.63 inch (66 mm) semi-square by 2 inches (57 mm) thick. This is our larges standard float. Made from our nearly indestructible foam. We place the arm position 3/4" from the side to allow complete folding with standard clamps.