Sea to Summit Dry Pack (Harness) to fit dry packs on. These are top and bottom harnesses for waist and shoulders. You can fit any size dry pack on it if it has fitting clips/straps. We had Sea to Summit Dry packs. You can adjust the harness too, and they are extremely comfy, great alternative for a tramping backpack. I am not quite sure if other dry packs would fit. This Auction is for one set of top and bottom piece. Dry pack/bag NOT Included. Have been through the washing machine. Happy bidding everyone. Grab a bargain!

https://seatosummit.com/product/hydraulic-dry-pack-with-harness/