The Lowepro S&F Lens Exchange Case 100 AW design allows user to change out lens with one hand, increasing lens-exchange speed. The dual-compartment design temporarily holds 2 lenses during a lens-changing moment. The case collapses back to a single-lens shape once lenses are exchanged and the easy-grip main handle allows smooth, single-handed operation. It features a slipLock™ tab which allows the case to be worn on S&F™ belt or other compatible product (not included).