Tri-Panel Knee Immobilizer Brace Immobilizer Knee Splint Comfort Rigid SupportSet the joint at 0 20, which keep your legs straight and be more suitable for wearing while sleeping. The tri panel design can freely adjust the position of the fixed support bar on both sides, which is more suitable for big and thin legs. The patella is hollow to facilitate wound care, it's easy to wear and take off. Four straps provide strong fixation from different directions, which can be adjusted flexibly to accommodate different leg