Sierra Trading Post offers the High Sierra Pack-N-Go 2 15-Liter Backpack in a Bottle in four colors (Moss/Mercury/Chartreuse pictured) for $14.99. Apply coupon code "ETJXR0317" to bag free shipping. That's the lowest total price we could find by $14. The backpack compresses into the included 1-liter bottle. Deal ends today.