It's very simple. They step into the tires on the rim. One of the good things about tubes with Presta valves is the presence of a threaded ring with a locking ring that holds the tube in place when the tire is on the rim and keeps the valve in place during inflation. I came to this system late but I like it.
Maddogยฎ Sports Padded Chest Protector, Tactical Half Glove, & Neck Protector Combo Package
23 Review
MetalTac Airsoft Speed Loader With Capacity Of 100 Bbs
27 Review
6" Foldable Half Face Airsoft Mesh Mask With Ear Protection And Military Tactical Lower Face Protection By OneTigris
41 Review
TAC9ER Kevlar Lined Tactical Gloves: Full Hand Protection, Cut & Temperature Resistant, Touchscreen Friendly For Men & Women
45 Review