Reverse gravity boots anti-gravity reversal boots heavy back stomach core exerciser gym ? Product Name: Anti-gravity Reversal Boots ? Bearing capacity: 350kg ? Net weight: 3kg ? Colour: Black ? Foam thickness: 3cm ? Composition: high density foam + stainless steel hook ? Scope: horizontal bar, large fitness equipment, gym note: ? Thickened foam with a thickness of 3cm to ensure comfort during exercise; ? All steel hooks, high quality locks, fixed locking device to ensure safety during sports ? All product sizes are measured by hand. There is a 2-3 cm error, which is normal. Luxury gravity reversing boots heavy abdominal back gym gym reversing boots abdominal crunch bar hook treatment core