Sippy of Steel - Lt. Blue

Regular price $9.99 Save $-9.99
-339 in stock

Our sustainable, eco-friendly ThinkBaby Sippy of Steel Cups are the easiest and safest way to switch from bottle to sippy cups. This stainless-steel sippy cup comes with a travel top, reducing the chance of spillage while on the go, and effectively protects the nipple from encountering foreign substances. The no-spill spout and sippy cup handles make it an effective trainer cup for an effortless transition from baby bottles.

Benefits & Features

  • Free of Hormone Disrupting Chemicals & Made of Recyclable materials
  • Spill Proof Spout - No spill spout features our cross-cut design and travel top to prevent spills and contact with foreign substances.
  • Featuring our Thinkbaby Bottle System - buy less bottles and easily convert Sippy of Steel to Our Baby Bottle (ThinkBaby of Steel) or Straw Cup (Thinkster of Steel)
  • Dishwasher safe materials for easy cleaning (top rack recommended).
  • Durable Stainless Steel body made from

    Features an extra soft medical grade nipple

    • Slow flow spout for easy transition from bottles to sippy cups
    • Perfect for gifts or registry items
    • Recipients of multiple awards for ease of transition
    • Ideal for babies 9-36 months 


      The Sippy of Steel baby sippy cup is made of recyclable materials to prevent environmental waste.

      • The base of the bottle in Thinkbaby System is made from 304 Stainless steel 18/8.
      • The collar is made No. 5 plastic (polypropylene) and therefore can be recycled after use.
      • Free of Bisphenol-A (BPA), phthalates, nitrosamines, lead, PVC, PET, and other biologically harmful chemicals.

      Learn More: Full Think Chemical Policy

      Do we conduct animal testing?
      We do not conduct animal testing on any of our products. All of our testing is either chemical testing or biological testing (on cells). We utilize third-party globally certified laboratories to conduct our testing.

      How do I care for my Thinkbaby Sippy Cup?
      Thinkbaby Sippy Cups are dishwasher safe (top rack recommended). The markings are embossed into the metal so they will not come off. The logo is laser etched into the material. When washing the Sippy Cup in the dishwasher, we recommend using a detergent that is free of chlorine. Most of the natural detergents on the market, from Eco Lever to Seventh Generation, should be free of toxic chemicals. If hand-washing, the American Pediatrics Association suggests using warm soapy water, but only if you live in an area with treated water systems.
      Before first use, we recommend sterilizing the Sippy Cup in boiling water for 2 to 5 minutes before first use. We do not recommend utilizing sterilizers, as we cannot guarantee that the ones on the market were made with safe materials. The Sippy of Steel is NOT microwave-safe. In fact, we strongly suggest that parents do away with the use of microwaves for all items and products destined for your little one.
      What else you might want to know...
      How do I convert the Sippy of Steel into the Thinkster of Steel?
      One of the great things about the Thinkbaby Thinker System is that you can convert the baby bottles into Sippy Cups and then on to the final stage - the straw bottle (Thinkster).
      Converting the baby bottle into The Sippy: Remove the baby bottle nipple and replace with the Sippy Cup spout. Then place the Sippy Cup handles around the top of the baby bottle and push down over the neck of the bottle. Tighten the collar with spout around the neck of the bottle andÑpresto! You have our award winning Sippy Cup!!!
      Converting The Sippy Cup into The Thinkster: Take the collar off of the baby bottle (along with spout) and screw on the Thinkster top. Ta-da! The Thinkster!
      And congrats-- you not only saved the landfills, but you also saved yourself money by lengthening the useful life of your bottle.
      We recommend using the Sippy of Steel with our Made-from-Limestone Neoprene Sleeve, available for purchase now.

      Since 2006, Thinkbaby & Thinksport has been creating safe, highly functional, and sustainable products. We continue the safer products mission by targeting harmful consumer product categories and developing safer alternatives for a wide audience ranging from babies to athletes. With a team of physicians & scientists, Thinkbaby & Thinksport lead in the usage of safe materials for consumer products.

      Read Full Mission Statement


      Free Of Biologically Harmful Chemicals
      Made With Recyclable Materials
      No Animal Testing
      Stainless Steel Sippy Cup With Handles

      Stainless Steel Sippy Cup With Handles

      ● Stainless steel sippy cup comes with a travel top, which reduces the chance of spillage during travel. It also protects the nipple from encountering foreign substances while on the go.

      ● Features an extra soft medical grade nipple. This slow flow spout provides an easier transition from bottles to Sippy Cups.

      ● Easily Convert ThinkBaby Bottle to Sippy of Steel, or Straw Bottles as your child gets older.

      Learn More

      Highly Rated and Recommended

      Perfect sippy cup!

      “I have sworn by think baby bottles since my son was born in 2017. He still uses the sippy type ones for his milk, it was the only sippy cup that he would take when we got rid of the typical nipples. I love that the thinkbaby cups are 3 in 1. The regular nipples, sippy and straw lid attachment! Best way to not have to have a millions different cups but yet no lids are interchangeable. Thinkbaby bottles should def be the new and only cups that people buy for their kids.” - WENDY S.

      Perfect Sippy Cup With Handles and No Spill Spout
      Stainless Steel Sippy Cup for 9-24 Months
      No Spill Spout and Travel Top

      No Spill Spout and Travel Top

      Comes with Travel Top, which reduces the chance of spillage during travel and protects the nipple from coming into contact with foreign substances.

      features our cross-cut design

      Thinkbaby Bottle System Featured On

      Leaping Bunny
      Whole Foods
      The Bump

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