LOVE: Kids and Moms 'love' our tumblers! The ‘Original’ Glass Mason jar cup designed by Elk and Friends. We’ve listened, tested and fine-tuned our products to meet every one of your needs. Also, the extra bonus is these cups use the same lids, straws & sleeves as our 10oz stainless steel drinking cups. Also available in 12oz & 16oz. | WHAT'S INCLUDED: This set includes 4 * 8oz mason glass jars, 4 * silicone sleeves, 8 lids (4 Straw Lids with spout + 4 * leak-proof & air-tight lids), 4 silicone straws with stoppers and straw cleaning brush. | NEW STRAW LIDS: We have updated our straw lid so now it can also be used to drink from with the sipping spout. A great way for little ones to start to learn how to drink from a cup. | STRAW STOPPERS: Our toddler cups have straws with stoppers. No more mess with toddlers pulling out their straws. Our straws are also a little wider for those thicker smoothie drinks. | SLEEVES: Our silicone sleeves bring fun to daily drinks. Not only bright and colorful they are cute with a few surprises from some of Elk’s friends hiding amongst the leaves. The sleeve also provides protection from bumps and drops as well as greater grip for those little hands. | VERSATILE: Great for toddlers (less spills) and kids drinks, or use for food storage with the leak proof and airtight lids included. Each jar also has measurement markings for exact portion control. All items are dishwasher, freezer and microwave safe (except lids in the microwave). | WHO WE ARE: After more than four years, Elk and Friends have been creating safe, fun and environmentally friendly products for the most precious little people in your life! All products are created from quality, natural materials and independently tested, ensuring each design is 100% safe for your children and the environment. Thanks for supporting small and shopping with Elk & Friends.