Everest ECS-4BLU Violin Shoulder Rest Collapsible, 3/4-4/4 size in Blue Finish This collapsible Spring Collection EVEREST Shoulder Rest is adjustable from 4/4 size to most 1/2 vio Provide the best comfort for all violin players A safe and robust design that contains no pinching hazards Easy storage to your violin cases Fits 3/4 to 4/4 size instruments