14PCS PREMIUM RESISTANCE BANDS SET - Includes 5 metal clip resistance tube bands: Red (20lbs), Gray (25lbs), Blue (30lbs), Yellow (35lbs), Black (40lbs); 4 high-density foam handles, 2 ankle straps, 2 door anchors, 1 carrying bag. ANTI-SNAP DOUBLE PROTECTION Workout bands are made of the highest quality and 100% natural latex with high elasticity, and built with protective nylon sleeves which prevent the resistance tube from being damaged and aging to provide maximum resistance and give you the best fitness experience. All bands are 55(4.6FT) in length, with a maximum stretch of 148(12.3FT). COMBINABLE RESISTANCE FOR ANY FITNESS LEVEL Our exercise bands are color-coded and individually labeled. The metal carabiner on the band can be used alone or stacked in any combination to achieve your optimal resistance level from 20 lbs to a maximum of 150 lbs. YOUR PERSONAL GYM & PROFESSIONAL WORKOUT GUIDE- The nylon resistance band set comes with a professional workout guide e-book,