XXL Full-Back Coverage:; Extra-large 24" × 35" heating pad covers neck, shoulders, and back, combining heat with vibration massage to relieve muscle tension, soreness, and spasms.8 Massage & Heat Combinations:; Features 2 heat levels (105°F–135°F) and 4 vibration modes powered by 4 motors, creating 8 customizable relaxation settings.Safe & Energy Efficient:; UL-certified with overheat protection, 30-minute massage limit, and 2-hour auto shutoff for safe, worry-free use.Wearable & Secure Fit:; Weighted edges, snap fasteners, and adjustable straps keep the pad securely in place while sitting, working, or moving.Soft, Washable Cover:; Made with skin-friendly waffle fabric and a removable, easy-clean cover (heating core not washable) for comfortable, simple care.