●Love: Kids and moms love our tumblers. The original mason jar cup was designed by Elk and Friends We have listened, tested and optimized our products to meet all your needs. The added bonus is also that these tumblers use the same straws and sleeves as our 10oz stainless steel tumblers. Also available in 12oz and 16oz. ●. Package Included This set includes 4 x 8 oz mason jars, 4 x silicone sleeves, 8 lids (4 straw lids with spout + 4 x leak-proof and airtight lids), 4 silicone straws with stoppers and cleaning brush. ●. PA2023 2023 STRAW LIDS WITH SPOUT Our straw lids have a pouring spout so they can also be used for drinking with the drinking spout. A great way for little ones to learn how to drink from a cup. ●STRAW PLUGS Our toddler cups have straws with stoppers. No more mess when toddlers pull out their straws. Our straws are also slightly wider for thicker smoothie drinks. ●SLEEVES: Our silicone sleeves add fun to daily drinks. Not only bright and colorful, they are cute with a few surprises from some elk friends hiding between the leaves. The case also provides protection from bumps and drops as well as better grip for little hands. WHO WE ARE After more than six years, Elk and Friends create safe, fun and environmentally friendly products for the most valuable little people in your life.