Yoofoss Baby Sleep Sack, 2.5 TOG, 2-Way Zipper

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Product guide

Yoofoss Baby Sleep Sack, 2.5 TOG, 2-Way Zipper

The Yoofoss Baby Sleep Sack is a sleeveless, 2.5 TOG wearable blanket with a two-way zipper, described for cooler-room use. Its listed age range spans 0–24 months, with four size bands, and the listing claims organic cotton and GOTS certification.

At a glance

Two-way zipper is designed to open from the bottom for diaper changes, with a zipper garage intended to reduce face chafing.
The listing recommends this 2.5 TOG sack for cold seasons and rooms at 50-68°F.
Sleeveless construction and a bell-shaped bottom leave room for movement, according to the listing.
Size options run from S for 0-6 months through XL for 18-24 months. Select by the baby's weight as well as the age band.

Price

$22.99Save 12%

Reference price: ~~$25.99~~

Price checked: Nov 13, 2026

View offer

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Pros and cons

Pros

Bottom-opening zipper can make diaper access easier without fully removing the sack.
Sleeveless construction avoids enclosing the arms, and the roomy bell shape allows leg movement.
Listing provides low-heat machine-drying guidance and claims less than 3% shrinkage.

Cons

The 2.5 TOG warmth positioning is intended for cooler conditions, so it is not a versatile choice for warmer rooms.

Technical specifications

12 specifications

Materials and construction
Shell fabric claim	100% Cotton
Layer and filling description	100% premium cotton layers and soft polyester filling
Certification claim	Certified by the Global Organic Textile Standard (GOTS)
Design	Sleeveless design
Bottom shape	bell-shaped bottom

Warmth and sizing
Thermal rating	2.5 TOG
Suggested room temperature	50-68°F
Intended season	cold seasons
Size bands	S for 0-6 Months. M for 6-12 Months. L for 12-18 Months. XL for 18-24 Months.

Closure and care
Zipper	2-Way Zipper
Care instructions	machine washing and dry on low heat (<30°C/86°F)
Claimed shrinkage after care	less than 3%

What to know before buying

Listing details to confirm

The title describes the product as 100% organic cotton, while the feature text says 100% cotton and also describes polyester filling beneath cotton layers. Confirm the exact fabric composition and which components the GOTS certification covers before purchase. The listing also gives age bands but says to choose size by weight, without supplying weight ranges.

Who is it for?

A good fit for

Caregivers looking for a sleeveless wearable blanket intended for colder rooms.
Families who value a bottom-opening zipper for diaper changes and need sizes spanning infancy to 24 months.

Less suited to

Buyers seeking a lightweight sack or one specifically intended for warm room conditions.
Shoppers who need confirmed all-cotton construction or exact weight-based sizing guidance before buying.

Yoofoss Baby Sleep Sack, 2.5 TOG, 2-Way Zipper · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 118 ratings

5 stars79%79%
4 stars12%12%
3 stars2%2%
2 stars4%4%
1 star3%3%

Customer feedback describes the sack as warm, soft, comfortable and well made, with positive remarks about its cotton fabric and design. Some feedback calls the two-way zipper useful, while zipper-quality opinions are mixed. Those impressions may matter especially for cooler-room use and frequent diaper changes, but they do not verify the listed 2.5 TOG rating or resolve the product's material-description ambiguity.

Positive themes

Customers report positive impressions of warmth, softness, comfort, quality, design and fabric.

Mixed feedback

Feedback on zipper quality is mixed, despite some customers finding the two-way zipper especially useful.

Frequently asked questions

What room temperature is this sleep sack intended for?

The listing recommends its 2.5 TOG rating for cold seasons and room temperatures from 50-68°F. Treat that as the product listing's guidance, not a substitute for checking the baby's comfort.

What sizes are available?

The listed bands are S for 0-6 months, M for 6-12 months, L for 12-18 months and XL for 18-24 months. The listing says to choose based on weight but does not provide weight ranges.

How does the zipper work?

The listing describes a two-way zipper that can unzip from the bottom for diaper changes, plus a zipper garage intended to protect the baby's face from chafing.

Is the fabric entirely organic cotton?

The title claims 100% organic cotton, but the feature text separately says 100% cotton and describes cotton layers with soft polyester filling. Confirm the precise composition and certification scope if these details are important.