ExoTrinity Sports Resistance Bands MANY BENEFITS, ONE RESISTANCE BAND. Working out with our fitness tube can help you to strengthen and build muscle, become more flexible, increase your endurance and burn fat and calories to lose weight. FREE WORKOUT GUIDE. Workout band comes with a door anchor, two handles and a free workout guide, which you can use for a wide variety of exercises. A CHALLENGING WORKOUT. Exercise tube provides 3lbs of resistance; Perfect for beginners. DURABLE CRAFTSMANSHIP. Our fitness tube, door anchor and handles are all made from heavy-duty materials to stand up to frequent use. SATISFACTION GUARANTEED. Our fitness tube set is backed by a complete 30-day money-back guarantee; If you're not fully satisfied, you can return it for a full refund