EB Airsoft have this sling pack in CB colour which they are selling for US$77.50, free shipping included. It looks big enough like those expedition packs made by Maxpedition and made of Cordura. You can stuff enough items in its main compartment and external pockets to last you the whole day. Too bad they didn't provide some pouches or MOLLE loops for attaching extra pouches such as magazine or water bottle pouches.

There are more colours and camo patterns apart from the Coyote Brown one. Click here to see them.