[Includes Everything You Need: This set comes with a lightweight single-wall stainless steel mason jar a silicone sippy straw top a removable silicone straw insert and a plastic ring and cap. Lightweight and Easy to Hold: The stainless steel body is super easy for babies and toddlers to hold. With embossed markings up to 12oz and a max capacity of 16oz this mason jar fits perfectly in little hands. Flow-Control Straw Top: Say goodbye to messes! Our innovative flow-control straw top helps minimize spills making it ideal for transitioning from baby bottles. Safe and Durable Materials: Made from heat-resistant BPA-free BPS-free non-toxic and lead-free materials this versatile stainless steel snack cup ensures safety for your little one. "Easy to Clean: Cleaning is a breeze with our regular-mouth design. Its dishwasher safe and has nowhere for mold to hide! This spill-proof toddler tumbler will stay fresh and ready for every adventure. All pieces are compatible with Mason Bottle silicone nipples and other products."]