Spirit TCR's Sauna Suit brings that extra sweat so you can burn as many calories as possible during your training. Comfortable fitting and free from phthalates and toxic chemicals this is the safest and most effective Sauna Suit available. Suit is durable, effective and does what it is designed to do. Only wear from warm up to warm down period and not throughout the day. Muscles will warm faster and you will perspire quicker and more with the TCR Sauna Suit. Make sure you replenish lost fluid with plenty of water.