Two distinct materials make up the POC Flow Shorts' outer shell: a nylon/spandex blend at the front and a durable nylon weave at the rear. The front panel's extra flex and give, which extends to the Flow's rear yolk as well, ensures these shorts let riders charge standing up, settle down on the saddle, or flatten table tops. The lower rear panels, on the other hand, provide strength that mountain biking demands to resist not only abrasion from natural pedaling, but also to brush off a dusty landing. Separating skin from the tough nylon, POC uses a smooth, polyester mesh lining. The liner's softness helps ward off irritation from friction, and it also keeps perspiration from putting a damper on the Flow. Available in even sizes from 28 to 38, the Flow Shorts use POC's hook-and-loop waist adjustment to evenly distribute pressure and be easy to adjust with gloves. Lastly, two front pockets and a zipped side allow ample storage, and POC's Flow Shorts come in the colors Boron Blue and Thulium Blue.