LOVE: Kids and Moms 'love' our tumblers! Made from premium stainless steel 304, these cups are not only super easy to clean, but lots of fun with the bright/neutral colors. The extra bonus the lids, straws & sleeves can also be used on our 8oz glass mason jar drinking cups. lids, straws & sleeves can also be used on our 8oz glass mason jar drinking cups. | WHAT'S INCLUDED: This set includes 4 * 10oz Stainless Steel jars, 4 * silicone sleeves, 8 lids (4 straw lids + 4 air-tight storage lids), straw cleaning brush and 4 silicone straws with stoppers. Size of Jar: Height-5.5" Width-2.6" | STRAW STOPPERS: All our cups have straws with stoppers. No more toddlers pulling out their straws from our tumbler cups! Our straws are also a little wider for those thicker smoothie drinks. Size 6.29"(L), 0.24"(ID), 0.35"(OD). Note: if the jar is turned upside down liquid can leak from the straw as we don't use valves in our straws so these cups can be used for thicker drinks, ie smoothies. | SLEEVES: Our silicone sleeves bring fun to daily drinks. Not only 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 and kids drinks, or use for food storage with the airtight lids included. All items are dishwasher and freezer safe.