HECCEI

HECCEI Merino Wool Cotton Baby Sleep Sack All-Season 2-Way Zipper Baby Sleeping Bag Adjustable Fit Baby Wearable Blanket

846+ bought in the past month

$109.00

About this item

  • MATERIALS & CERTIFICATION: 100% Australian Merino wool lining (origin: Australia) and 100% cotton outer; Oeko‑Tex Standard 100 certified, free from harmful chemicals.
  • TEMPERATURE CONTROL & COMFORT: Merino wool is naturally breathable and temperature‑regulating for all‑season use—keeps baby warm in winter and cool in summer, helping babies (and parents) sleep better.
  • UNIVERSAL SIZING & USAGE PERIOD: Universal design — Classic Sack Mode (Keeps baby cozy & secure) fits 2–24 months; Legs‑Out Mode (Freedom of Movement) fits 2–36 months, extending the product’s usable life.
  • HIGHLY PRACTICAL: Double shoulder snaps and a two‑way zipper for easy dressing and diaper changes; closable seat‑belt slots for transfer to stroller/bouncer/crib; under‑arm snaps let the product grow with the baby as a swaddle transition.
  • BRAND & AFTER-SALES: HECCEI offers premium workmanship and materials, backed by professional customer service and an industry-leading warranty for added peace of mind.
  • GIFT‑WORTHY PACKAGING: Comes in a pretty gift box—ready to give. Perfect for Christmas, Thanksgiving, Easter, New Year’s, the 4th of July, baby showers, newborn gifts, first birthdays, or a baby’s “first” holidays.
  • 100% RWS CERTIFIED: Guarantees sustainable farming and the highest quality, pain-free wool for your baby.
$109.00

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Product details

MaterialCotton, Merino Wool
ColorSnackyphant Grey
BrandHECCEI
Special FeatureAll-season, Breathable, Classic Sack Mode (Keeps baby cozy & secure) fits 2–24 months; Legs‑Out Mode (Freedom of Movement) fits 2–36 months, Natural Materials, Temperature Regulating See more
Blanket FormSingle Layered Blanket

Technical specifications

materialCotton, Merino Wool
colorSnackyphant Grey
brandHECCEI
special_featureAll-season, Breathable, Classic Sack Mode (Keeps baby cozy & secure) fits 2–24 months; Legs‑Out Mode (Freedom of Movement) fits 2–36 months, Natural Materials, Temperature Regulating
blanket_formSingle Layered Blanket
age_range_description2-24 Months(2–36 months)
product_dimensions35.4"L x 18.5"W
seasonsAll, Fall, Spring, Summer, Winter
fill_materialCotton, Merino Wool
product_care_instructionsFollow Wool Care Instructions, Gentle Cycle Recommended, Lay Flat To Dry, Machine Wash
sizeFits 2-24 Months(2–36 months)
fabric_typeCotton Blend, Merino Wool Blend
number_of_items1
item_weight12 ounces
included_componentsSleep Sack
fabric_warmth_descriptionHeavyweight
model_nameMerino-Sleepsack
manufacturerHeccei
best_sellers_rank#65,389 in Baby ( See Top 100 in Baby ) #86 in Baby Sleeping Bags
date_first_availableOctober 29, 2025

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Customer reviews

4.8115 ratings
★★★★★

Luxe Goldilocks-Zone Sleep Sack With Legs Out or Cozy Tucked In Options.

CustomerFebruary 7, 2026

I got this sleep sack for my niece, who stays with me from time to time, and it has quickly become one of my favorite baby items in the house. I like to sleep on the cooler side, so I’m always a little worried she’ll get cold at night, but this keeps her perfectly comfortable and genuinely happy. One of the features I love most is the cozy vs. legs‑out option, which surprisingly isn’t always available on other sleep sacks. Her mum told me to use the legs‑out mode for naps and the cozy enclosed mode at night, and that routine has worked beautifully for us. Her mum was surprised at how well her daughter sleeps in this, longer stretches, easier settling, and no fussing about temperature. It now goes home with my niece when she goes home. It's really the only thing that does, so that speaks for itself. The material is exceptional. The cotton and merino double stack feels incredibly soft and lightweight, and I could tell immediately that this is a premium product made with child‑friendly and earth‑friendly materials. And the fact that it’s made in Australia gives me even more confidence, if anyone knows merino, it’s the Australians. They have more sheep there than people (I think)! This has even been named #1 on an Australian best‑of list for wool sleep sacks! I also really appreciate the packaging integrity. When I received this, I felt confident that no one had opened it along the way. There is a single round cellophane seal in the middle of the sleep sack box, and if anyone had tried to open it before it reached me, I think the paper would have ripped. That kind of tamper‑evident detail matters to me, especially for baby items. The merino itself is the magic, and I love merino for me anyway! It keeps you warm when you need it and cool when you don’t, almost like living near the ocean where everything stays naturally in the Goldilocks temp zone. It’s such a clever, natural way to regulate a baby’s comfort without overthinking layers. The zippers are smooth and well placed, making nighttime changes easy without waking her up, too much anyway. The stitching is tidy, the construction feels durable, and the whole design has that “someone actually thought this through” kind of vibe. Overall, this is a beautifully made, premium sleep sack that is the best I've seen. My niece sleeps wonderfully in it, and I feel confident knowing she’s cozy, safe, and comfy. I haven't seen another sleep sack that's close to it's luxe feel for the same price. Thanks for reading all the way to the end of this long review. I think if you think you'll like this, you probably will. If you get it, I really hope it works as well for your kiddo as it has for my niece. We really love it. Read more

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★★★★★

Go ahead & put on your registry!!!

KaylaJanuary 20, 2026

My petite 3 & 1/2 month old is able to wear this! She just grew out of her 0-3 one and I saw this & thought merino wool that's probably amazing. My baby is also a sleep sweater. She is also still very tiny and I like to sleep with a fan on.. so I need her to stay warm .. so when I saw this I needed to try it. So first thoughts I was like wow this is HUGE! BUT it really doesn't affect it functionality AT ALL. She's been sleeping in it every night for the last few nights & we have had zero issues with it being large over her legs because there are snappies under her arms to keep it in place! So it's worked perfectly & she has also slept for longer stretches in it for some reason - I really don't understand why? Or if it is just a coincidence but it doesn't seem like it & I'm not complaining! Haha! I also really love the fact you can put the stroller straps through it & even a car seat! Which is amazing because it's not super thick but you don't have to worry about the blanket flying away, baby kicking it off, or the blanket getting over babies face ! It's super soft & I really just have zero negative things to say about this sleep sack. It's so easy to use & it will last a seriously long time! Again the size of it on a small baby has caused us zero issues! So the fact you don't have to keep buying new ones as they size up really is what makes this worth it. I know it's expensive but I haven't found another sleep sack that does everything this one does! It also keeps my baby warm without her being sweaty because of how breathable it is. You don't have to hand wash but you need to wash it in cold water and don't dry it at all!!! Line dry or lay flat to dry! That is a must but it's not that serious since you don't have to hand wash. I'm used to having to hand wash her wool diaper covers and lanolizing them so that's really no big deal to us! Also the snaps on the shoulders are actually extremely helpful as well. Buying two of these & you will be set for the WHOLE baby stage! After swaddling! Completely 1 million percent worth it. So put them on your baby registry & make them a must have! Thank me later! Read more

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