The Klean Kanteen — a reusable, lightweight and risk-free 12oz stainless steel (304) bottle designed for small hands comes with a loop cap. Loop cap is made from safe, non-leaching polypropylene (pp#5). Features Specifications • BPA-free & eco-friendly • capacity: 12 fluid ounces (355 ml) • slim design fits most bottle/cup holders • weight: 4 ounces • accomodates large ice-cubes • size: 5” H (w/o cap) x 2.75” W • polypropylene #5 sippy, loop, flat or sport cap • opening diameter: 1.75" (44 mm) • dishwasher friendly • high-quality food grade #304 stainless steel     • reusable & 100% recyclable Shop more eco-friendly Stainless Steel Water Bottles here.