HigherDOSE V4 InFrared Sauna Blanket in Beauty: NA. HigherDOSE V4 InFrared Sauna Blanket in Beauty: NA. Take a wellness cue from the likes of celebrities world wide and take your DOSE on the go. Perfect for traveling or at-home use, the HigherDOSE Infrared Sauna Blankets increase the body's thermal energy and promote a temporary increase in blood flow?so you sweat like you're working out, without working out. As you relax into the soothing, yet stimulating heat, infrared also provides an uplifting sensation. The result? A healthy, rejuvenating experience that leaves you feeling euphoric.. Voltage: 100-120 Volt (US/Canada model); 220v (UK/EU models)Wattage: 350-420 Watts. Waterproof Polyurethane (PU) fireproof cotton, black tourmaline crystals, purple amethyst crystals, detox charcoal. Vegan & cruelty-free. Measures approx 71 x 71. HDOR-WU1. Blanket-V4.