The Garbage™ Gymnastic Rings are built from reclaimed material for suspended bodyweight movement. The straps are made from 97% rPET. The rings are formed from waterproof FSC certified plywood. The fast-clip buckles are rated to 7 kN (approximately 700 kg). They can be used indoors or outdoors. The surface remains stable under load. Each set is hand-assembled in the EU. Variations in finish are expected.