Most likely, you demoed one of these packs this summer! The coaches have been using them and we LOVE them! We’ve put them through the ringer, day after day, and they’ve stood up to every test!
The Avos has slightly more curved straps than the Endo.
The Endo is for the person with a longer torso.
The 10 liter is great for typical 1 day rides without needing lots of layers. The 15 liter holds the coaches first aid kit, extra layers and snacks for 15 people, along with the bladder!