Kelty Cache Box Designed to protect your sensitive electronics from mother nature PVC Free Sizes (H x W x D): Small - 3" x 6.5" x 2.75", Medium - 4.5" x 7.5" x 4.5", Large - 4.5" x 11.5" x 7.5" Weight: Small - 4oz, Medium - 7.5oz, Large - 1lb Volume: Small - 53.6in3, Medium - 151.9in3, Large - 388in3