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⭐️⭐️⭐️⭐️⭐️ Rated 4.8/5

Dreamy Convertible Sleepsuit - High Sea

Dreamy Convertible Sleepsuit - High Sea

£39.95 GBP
£68.95 GBP £39.95 GBP
Save £95.00 Sold out
Size

Sleeping Bag

  • Perfect for every season
  • Breathable & skin-friendly
  • Fuss-free nappy changes
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Frequently asked questions

What TOG rating should I choose for my baby?

We offer multiple TOG options to suit different room temperatures.

  • for warm nights (21–24°C)
  • all-season comfort (20–22°C)
  • for cooler rooms (16–20°C)

Always check your nursery temperature and layer accordingly.

Is this sleepwear safe for overnight use?

Yes! Our sleep bags and sleepsuits are designed with your baby’s safety in mind — featuring breathable materials, no loose blankets, and a snug fit that supports safe sleep guidelines.

What size should I order?

We recommend choosing size based on your baby’s age. If in between sizes, size up for longer wear. Our sleepwear is designed with a roomy fit for growth and movement.

What materials do you use?

All Cozy Kids London products are made with a bamboo cotton blend that’s incredibly soft, breathable, and gentle on delicate skin — perfect for sensitive or eczema-prone babies.

How do I wash and care for it?

Machine wash cold with like colours. Tumble dry low or line dry. No bleach or fabric softener needed — our bamboo fabric stays soft wash after wash.

What’s the difference between footed and convertible sleepsuits?

Convertible zip sleepsuits can be worn with feet open or closed, thanks to fold-over cuffs. They’re perfect for sleep, play, and everything in between.

From playtime to bedtime (and everything in between), our Convertible Sleepsuit is the ultimate all-in-one essential. Made from buttery-soft bamboo cotton, it’s breathable, gentle on sensitive skin, and designed to grow with your little one.

Thanks to clever fold-over feet and mitts, this zip-up wonder goes from romper to footie in seconds—perfect for wiggly babies and curious toddlers. And with a two-way zip for fuss-free nappy changes, it’s one less thing for tired mums to worry about.

See what other parents think:

  • Katie H.

    There’s nothing negative to say about this sleep suit. The material is as smooth as butter & provides warmth like a blanket would for my infant minus the risk of suffocation. Everyone should have this product on their registry! 10/10!

  • Kerry D.

    The Sleep Bag from Cozy Kids is an absolute game-changer for bedtime. From the moment we started using it, my child began sleeping more soundly and warmly, and I can’t say enough about the quality of this product.

  • Paula J.

    Couldn't be happier about the sleep bag, so soft and durable. Katie sleeps so well in her sleep bag and we love how COZY it feels!

  • Sharon P.

    These are by far the best quality sleepsuits we have purchased to date. So glad we found this company early on and with my first baby! I will definitely be purchasing from this company until my baby can no longer fit the sizes!

  • Mandy C.

    I just wanted to take a moment to say how much I absolutely love your products—and I don’t say that lightly! This is only the second time I’ve ever reached out to a company just to share how much I appreciate what they make.

  • Lorraine T.

    Can't get enough of these sleepsuits! Soft and stretchy, and the design is on point. Love the colour options! The nappies zipper is a genius move, and the fold-over feature just seals the deal. They are a staple in our bedtime routine now.

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