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3.5 TOG

Sleep Suit Sack 3.5 TOG Sage

The Sleep Suit sack is an award-winning, multi-functional sleep sack and Sleep Suit with legs in one, for babies, toddlers and kids.

4.9
Rated 4.9 out of 5 stars
2,130 Reviews
Regular Price
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Size Guide
  • Free delivery on orders over $70*
  • Estimated dispatch: 04 November 2026
  • 30-day returns and exchanges
4.9
Rated 4.9 out of 5 stars
Based on 2,130 reviews
Customers Talked About
2,130 reviews
  • Simona K.
    Verified Buyer
    10/13/26
    Reviewing
    Sleep Suit Sack 3.5 TOG Willow
    Rated 3 out of 5 stars
    Comfortable, but disappointing for the price

    My daughter sleeps comfortably in this sleeping bag, but unfortunately, I'm not entirely happy with it.

    The biggest issue is the sleeves. Although they fit fine when her arms are down, they ride up significantly when she sleeps with her arms above her head, leaving her wrists and forearms exposed. I had to buy a separate pyjama tops with longer sleeves to keep her arms covered.

    Our bedroom temperature is around 18°C, and despite using the 3.5 TOG sleeping bag with a long-sleeved bodysuit and trousers underneath, I found her neck cold for a couple of nights and felt the need to add extra warmth.

    I'm also concerned about how long the sleeves will actually fit, considering this size is advertised for ages 2–4 and my daughter is two and a half years old.

    For £79, I expected a more practical design. It's comfortable, but unfortunately, it hasn't quite lived up to my expectations.

  • Sarah A.
    Verified Buyer
    10/12/26
    Reviewing
    Sleep Suit Sack 3.5 TOG Hedgehog
    Rated 5 out of 5 stars
    I love these sleepsuit bags!

    My son has never liked zippered sleepsuits, and they always have such small zip covers that can move and dig into his neck. Now that the weather’s getting colder I had to find a solution because he’s such a wriggly sleeper at 17 months, he wouldn’t be able to keep a blanket on. I scoured the internet for something similar with poppers but they just don’t exist. I’m so happy I found these, the zipper covers actually keeps it place with the added comfort of the tab so you know it’s comfortable and the zip won’t dig into them. He’s a bit too short for the legs to be separated but they might see him through next winter too! He seems to like that, for now at least before it gets really cold, his legs can be bare and he has plenty of room in the bag to move around. It took him a couple of days to be able to stand up in it but he can now. I got them on sale and am happy that we’ll get very good use out of them. The card with a thermometer and a graph of what layers to add is really helpful too, and comforting that you’re bot over or underdressing them. I highly recommend!

  • Nikki D.
    Verified Buyer
    9/29/26
    Reviewing
    Sleep Suit Sack 2.5 TOG Sweet Orchard
    Rated 5 out of 5 stars
    Perfect sleep suit

    Our little girl loves this sleep suit. She has slept so well since we bought it. Would highly recommend.