Woolino
woolino.com
One merino wool sleep bag for every season
Woolino makes baby sleep bags, swaddles and blankets centered on merino wool. Its best-known product is the 4 Season Ultimate Baby Sleep Bag, which pairs a superfine merino wool lining with an organic cotton outer.
The brand says the merino wool naturally helps regulate temperature, so the same bag is meant to work year-round without swapping weights or relying on a fixed TOG rating. Woolino lists the baby size as a universal fit for babies from 2 months to 2 years, with a separate toddler size for ages 2 to 4.
The sleep bags are designed for a room temperature of about 63 to 75 degrees Fahrenheit and feature a two-way side zipper, a bottom opening for nighttime diaper changes and a closable seatbelt opening for car seats and strollers. The 4 Season Ultimate bag carries an OEKO-TEX Standard 100 certification.
Woolino at a glance
- Signature product
- 4 Season Ultimate Baby Sleep Bag, plus swaddles and blankets
- Materials
- Superfine merino wool lining with an organic cotton outer
- Baby size
- Universal fit for babies from 2 months to 2 years
- Toddler size
- Separate size for ages 2 to 4
- Temperature range
- Designed for a room temperature of about 63 to 75 degrees Fahrenheit
- Certification
- OEKO-TEX Standard 100 certified
- Features
- Two-way side zipper, bottom diaper zipper and a closable seatbelt opening
A peek at Woolino
Woolino FAQ
- What is the Woolino 4 Season sleep bag?
- It is a baby sleep bag with a superfine merino wool lining and an organic cotton outer that the brand designs to be used year-round.
- What sizes does it come in?
- The baby size is a universal fit for 2 months to 2 years, and there is a separate toddler size for ages 2 to 4.
- What temperature is it made for?
- Woolino says the sleep bag is designed for a room temperature of about 63 to 75 degrees Fahrenheit.
- Does it have a TOG rating?
- The brand says it uses natural breathable fibers with no synthetic filling and relies on merino wool's temperature regulation rather than a fixed TOG rating.
- Is the sleep bag certified?
- The 4 Season Ultimate Baby Sleep Bag carries an OEKO-TEX Standard 100 certification for tested safety against harmful substances.
- Is there a Woolino discount through Cubbie Club?
- Cubbie Club members can unlock a Woolino offer; create a free account to reveal the current offer and terms.
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Cubbie Club earns a commission when you shop Woolino through our links or code, at no extra cost to you. Brand facts last verified September 24, 2026.