Over the past few weeks, we’ve been overwhelmed (in the best way!) by the number of messages we’ve received about our Grosmimi Stainless Steel Straw Cups. Every day, more and more customers reached out through our website and Instagram to ask, “When will they be back?”
But this restock is more than just bringing back a popular product. For the Zezebaebae team, it’s been a moment to pause and reflect. Why do so many families love Grosmimi’s stainless cups? What makes them such an essential part of everyday parenting?
We’ve used this time to dig into your feedback, questions, and tips — everything you’ve shared so generously with us.
Our team has been working behind the scenes to figure out how to help parents and caregivers get the most out of every sip.
Let’s talk about what makes the Grosmimi stainless steel straw cup so loved — by us, and by you.
Maybe it’s the sleek design. Maybe it’s the leak-proof lid. Or maybe it’s because your little one has already claimed it as “my favorite cup!” Whatever the reason, we’re here to celebrate that connection.
So yes, it’s back. But more importantly, we hope this post reminds you why this cup is worth the love — not just from parents, but from babies too.
The Favorite Features – According to You. We didn’t make this list up — it’s based on countless messages, reviews, and conversations with parents who actually use it every day. Here’s what you told us makes Grosmimi’s stainless cup a must-have in your routine.
❶ Keeps Drinks Just Right — Hot or Cold
Whether it’s cool water on a hot afternoon, or a little juice packed for a walk around the block, Grosmimi’s stainless steel cup keeps drinks at just the right temperature for up to 6 hours. Made with 316-grade(304-grade for outer wall) stainless steel, it’s designed to keep drinks fresh and at their best — ensuring safe, clean hydration whether you're out in the summer heat or bundled up in winter.
From backyard snack breaks to front porch cuddles, and even during nap-time car rides, it helps your little one stay comfortably hydrated wherever the day goes.
It’s not just a cup — it’s a year-round hydration buddy for your baby (and peace of mind for you).
❷. Lightweight Design
Compared to other stainless steel cups, this one is noticeably lighter — weighing just 188g (±2g) for the 200ml version and 216g (±2g) for the 300ml. It’s thoughtfully designed to reduce strain on small hands and wrists, making it easier for little ones to hold and drink independently. A cup that keeps both kids and parents happy.
❸. The Silicone Cover That Does More Than You Think
Every Grosmimi stainless cup comes with a removable non-slip silicone cover — and here’s why parents love it:
💥 Built-in protection: Cushions the cup during drops to protect both the cup and your floors — and prevent loud crashes.🧷 Stays put, not slippery: Silicone base keeps the cup stable, even on smooth floors or high chairs.
❹. Built-in Measurement Marks — Less Guessing, More Peace of Mind
One common challenge with stainless steel cups is that they’re not see-through — you can’t tell how much liquid is inside just by looking. That’s why we placed clear, easy-to-read measurement markings on the inside of the Grosmimi Stainless Steel Straw Cups. It’s a small but thoughtful design detail that makes a real difference when you’re filling it with water or juice — especially during busy mornings, groggy afternoons, or anytime you just want to get it right without guessing.
❺. Stays Clean, Stays Neutral — No Lingering Smells or Stains
Stays clean no matter what’s inside. Unlike plastic cups, Grosmimi’s stainless steel body doesn’t absorb strong smells or hold on to stains — even after juice, soup, or other flavorful drinks. That means you can rinse, refill, and go — without lingering odors or discoloration. It’s long-lasting, safe, and always ready for the next sip.
❻. Just Plain Cute — Thoughtfully Designed for Everyone
Let’s be honest. Half the fun is picking a color/design you love. Some parents choose based on their baby’s personality, others love to coordinate with outfits. We get it. That’s why Grosmimi cups come in beloved shades like Butter Bear and Olive — designs that both kids and parents genuinely enjoy.
We also keep things fresh with exclusive colors and limited collaborations, including special editions released just for our U.S. customers. Every detail, from color to character, is thoughtfully crafted to bring smiles and suit a variety of tastes.
♥ Shop now ♥
