Exclusive to Amazon, 100% ABS360 degree multi-directional spinner wheelsIntense corrugation for shell strength, brushed texture for scratch and scuff resistance, compression expansin gussets on all spinner sizesCases expand for maximum capacity, clean modern panel design, locking and adjustable pull handlesErgonomic pull-handle system, Full divider and compression strapsTSA lock on larger checked piece onlyCarry-On Spinner measures 20