Thanks to that

It is compatible with accessory hip and drop leg panels

Adjustable height

it gives you the capability of carrying everything as close to your body as possible

The biggest issue when you carry a plate carrier and a belt is the lack of possibility to mount anything on front

EOTECH HWS EXPS2 Black Backpack Thanks to thatThe HWS EXPS2 maximizes rail space with its compact size and allows for co witnessing of iron sights. It has convenient side buttons to add a magnifier and features an adjustable, locking, quick detach lever for easy attachment and removal. Included in the box: HWS EXPS2 Quick Start Guide Warranty Card CR123 Battery Protective Case Non Night Vision Compatible L X W X H 3. 8" x 2. 3" x 2. 9" (96. 5 x 58. 4 x 73. 7 mm) Weight 11. 2oz (317. 5g) Water