Adventure racing packs

The standard EPX200 makes a great light pack. But for a big adventure race you want the toughest and lightest pack you can get. So upgrading to the ultra weave makes sense. Its made from UHMWPE (same stuff as Dyneema) and it the lightest and strongest fibers commercially available, with a tensile strength 15x stronger than steel. 

Hipbelt pockets are a must have for easy access to energy filled snacks, anti chafe cream, sunscreen ect. They are removable 

This adds a strap on each side to clip to the roll top and compress the pack from the top. Its fully removable and help keep larger volume packs neat and small when not fully loaded. These are removable and you can still use the rolltop as a roll and clip onto itself like the std option that's faster.

Go with a solid front pocket instead of mesh so it doesn't catch on everything. If your worried about loosing stuff from the front pocket then you can add a G-hook or flat for security. You may also want to upgrade the pocket fabric to the ultra 200 for added abrasion resistance if you're are really hard on gear.

Water bottle pocket are another add-on that's very popular with racers and are designed to take a 750ml bike water bottle. You can also get a bottle in and out of the side pocket of the pack without taking the pack off if you don't like bottles on your front. I also do a smaller pocket to fit a phone.

The pack volume has been very varied from 85L to 27L. Most people end up with 65L to 75L for things like Godzone. But for smaller races where you need less gear a super tough, light frameless pack might be all you need.