Dynamic Discs says this about their 2019 Trooper Backpack:
The Trooper bag provides suitable space to handle all of your disc golf needs. The Trooper can hold 18+ discs in its main compartment. It also has an upper compartment that can hold anything from more discs to articles of clothing. Featuring three additional pockets, the Trooper can handle all accessories needed for a full disc golf round. One side of the pack features a drawstring-enclosed water bottle holder and valuables pocket above. On the other side a larger side pocket is featured in addition to another valuables pocket above.
Equipped with a padded set of straps as well as a padded back panel creating a very comfortable fit that is easy to carry for multiple rounds. Engineered with a low center of gravity, the Trooper is certain to keep your discs and other belongings upright. The Trooper features four color combinations including the bright heather blue and black option, heather gray and black option, black on black with contrasting white logos and silver zippers, as well as an arctic camouflage option.
Large main disc compartment that holds 18+ discs
Padded straps and back panel for a comfortable carry
Upper compartment for accessories, articles of clothing or 3-4 more discs
Three external pockets for keys, wallet, phone, mini, scorecard, etc.
Drawstring-enclosed water bottle holder