The 1/2 fold Cellerciser® folds in half for easy storage and transport in its accompanying carrying case. Its Tri-Daptable® springs, space-age mat material, and all-steel construction provide superior strength, safety, and long-life durability. The patented Tri-Daptable® spring technology offers the only self-adjusting adaptive spring of its kind on the market so “all” family members can use the same unit! Comes with a lifetime warranty on the frame, rubber feet, bullhorns, pins and 5 year on springs and mat.* When used properly the Cellerciser® can provide you a lifetime of benefits. lifetime warranty on all parts is availabe: https://cellercise.com/cellercise-warranty/ The portable Cellerciser® Bi-Fold rebounder folds in half for easy storage and transport in its accompanying carrying case.