Nfinity Adult Defiance Cheer Shoe Synthetic HALO = High Altitude Lift Optimization Interlocking lacing system 5.4 oz.-Cheer Shoe Patent pending lift optimization for optimum height when tumbling Ergonomic shaped outsole for better stunting control Note: For male customers, please order 2 sizes up.These shoes are designed to run a little small and fit the foot very snug. HALO = High Altitude Lift Optimization Interlocking lacing system 5.4 oz.-Cheer Shoe Patent pending lift optimization for optimum height when tumbling Ergonomic shaped outsole for better stunting control Note: For male customers, please order 2 sizes up