Quality & durability are our top priorities, which is why we guarantee all of our packs against any defects in materials or craftsmanship for the practical lifetime of the product, or until your kids graduate from high school. Good gear should be made to last, and we specifically designed our packs to provide versatile functionality beyond just the bottle years. And we sincerely hope that our customers keep our products in use as their kids continue to grow, or pass them along to new parents to share the load for new adventures and new generations.