Jobe say -

Elastic side panels to make it suitable for double sizing

Unisex fit

Adjustable webbing straps: 1,5" | 3,8cm (1x) and 1" | 2,5cm (1x)

Comfortable PVC-foam

Neoprene elastic hem for more comfort and better fit

Neoprene shoulder straps for extra comfort

Short fitting for comfort and flexibility

Strong & lightweight nylon fabric

Strong YKK Buckles & YKK zipper"

50N ISO-certified (buoyancy aid)

Inside pocket with carbine hook (2x)