I have one of these (in the size pictured). It is very well made, and totally rain proof. The cord locks work very well and do not slip at all. They are the same ones used on OMM packs and accesories.
As with all siliconised material, this bag is very 'slippy' and this can help you stuff your gear into it.
Posted: 07/09/2010 at 11:02