Ergonomic Design & Ultimate Safety: Ergonomic design allows the heating pad to be evenly distributed over the back and neck.It effectively soothes muscle tension and soreness, and instantly relieves neck, shoulder, and upper back pain.Its interior/exterior is well designed to ensure the heating pad's safety, while your hearing pad is protected while being used. Fast-Heating Technology & High and Stable Quality: The neck and shoulders Heated pad with fast heating technology, uniform distribution of heating wires, continuous heating to provide a more comfortable experience. Strict control of each processing procedure to ensure that each produced electric heating pad is safe. 6 Heat Settings & 4 Timer Levels: A variety of options to match every scene you need. 6 level heat adjustment helps conserve energy and prevents excessive heating, offering more options for you. Multi - level adjustment of the neck and shoulder heating pad can meet the needs of different temperatures. Extra Large Size: Large Electric neck and shoulders heated pad with clasp can fully covers your neck, shoulders, and upper back, help effectively relieve muscle aches, stiffness, tightness, muscle spasms, cramps, and chronic pain.