Rock Mat The Therapeutic Rock Mat stimulates over 200, 000 foot nerve endings and increases proprioception. Firm foam applies pressure to specific parts of the sole of the foot and releases tension. Train natural proprioceptive capacity by standing and walking on the Rock Mat in the comfort of your own home without having to go out doors. Dimensions: 21\" by 12\" Toe Spacer We\'ve levelled up and redesigned our toe spacers to better suit your needs. The Toe Spacer 2. 0 is designed without the pinky strap to allow the fifth toe to freely move and encourage better range when pivoting. We\'ve also added in our logo and continue to use a flexible yet sturdy silicone to allow for a comfortable fit when active. They also can help with plantar fasciitis, bunions, corns, hammertoes, blisters or overlapping toes. The Toe Spacers come in a set, one for each foot, suitable for all foot sizes.