Back Wrap Hot Cold Clavicle Supports Spirometer * Indicator registers forced MSHQ 1594XL Spirometer * Indicator registers forced vital lung capacity up to 7 liters * Needle stays at maximum until reset * Weight: 6 ounces * Can be used as an incentive exerciser * Knee Hi * Antracite * 20 30 mmHg * Small * Ankle Circ 7 8 The original moist heat pack designed for use in soothing sore muscles aches and pains * Designed specifically for relief of nagging lower back pain stomach cramps and leg arm or shoulder aches and pains * Adjustable strap can be comfortably secured in various positions on the body for complete mobility * Use it hot or cold * Filled with 100% natural organic grains * 20 when stretched the maximum length is 72