1. Adjustable and detachable shoulder straps offering comfort and flexibility; 2. One plastic bone on each side of the waist to prevent hemming; 3. Anti-slip strips design on the leg opening to prevent crimping when moving around; 4. Adopt hollows design on the butt area to create a sleek line from butt to thighs, instead of flattening it; 5. Combine hook-and-eye-closure with YKK zippers can give you the security to move around freely.