When your back feels like a tangle of knots, turn on Snailax and let warmth do the rest—6 heat levels, heats up in 30 seconds, soft material, auto shutoff after 2 hours for safety. At 12×24", it covers the whole pain zone—from lower back to shoulders. Want moist heat? Spray water for extra relief. Plus, a 9-foot detachable cord frees you from outlets