Not just a cute sleeping bag.
This isn’t about prints.
It’s about peace of mind.
Not a loose blanket.
Not something you’ll stop using next month.
It’s a sleep solution.
Designed to protect, tested to reassure, made to last.
Certified. Adjustable. Breathable. And yes, really easy to use.
Baby Sleeping Bag by Bisoo - 2.5 TOG - 100% Cotton - Adjustable 0–6m / 6–18m




Baby Sleeping Bag by Bisoo - 2.5 TOG - 100% Cotton - Adjustable 0–6m / 6–18m
A sleeping bag that hugs, not just warms
and works like a plan.
Safety certified.
Loved by parents.
Ready to ship.
A sleeping solution trusted by parents who care about safety first.
Tested to the highest international standards in the UK, EU, and US.
Made from ultra-soft cotton with certified breathable filling.
Available in two sizes: 0–6 months (fixed) and 6–18 months (adjustable with clips).
Ideal for nursery temperatures between 16–20°C (61–69°F), with a cozy 2.5 TOG rating.
Equipped with a double zipper for easy nighttime diaper changes and safe inner clips to prevent slipping.
Hypoallergenic, washable at 60ºC, and Oeko-Tex Standard 100 certified.
This sleeping bag isn’t just cute. It’s calm. Built-in.
Everything you need to know—because what your baby sleeps in should be beautiful, breathable, and tested like a medical device.
Material & Certifications:
– Outer & lining: 100% cotton
– Fill: Hypoallergenic polyester
– OEKO-TEX® Standard 100 certified (no harmful chemicals, pesticides, carcinogenic dyes or residue)
– Tested and certified for infant safety in:
🇬🇧 UK – BS 8510:2009 + BS EN 14878
🇪🇺 EU – BS EN 16781
🇺🇸 USA – CPSC & CPSIA compliance
→ This means your sleeping bag protects against overheating, strangulation risks, choking, and chemical exposure. Fully regulated.
Design & Features:
– 2.5 TOG insulation → for year-round use in cooler rooms (16–20°C / 61–69°F)
– Double-direction zipper → easy nappy changes without waking the baby
– Zipper pull guard → avoids scratching delicate skin
– Underarm and rear adjustment buttons → better fit as baby grows
– Elastic sides → soft stretch for comfort, holds shape over time
– Clip system on 6–18m model → fold bottom to 65 cm, extend to 80 cm as needed
– Side button safety → keeps baby from slipping into the bag in early months
Care:
– Machine washable at 60ºC
– Quick to dry
– Maintains softness and shape even after frequent washing
Warnings:
– Only use in a crib or cot
– Do not combine with duvets, blankets or additional bedding
– Not suitable for babies under 4 kg (8.8 lbs)
– Do not let your child walk inside the sleeping bag
Now it’s your move.
They say babies don’t come with a manual.
But some products feel pretty close.
This sleeping bag? It’s the one thing parents keep buying again, gifting to others, and raving about in the reviews.
Not perfect. But close.
Try it for 100 nights. Sleep on it — literally. If it’s not for you, send it back.
Lo que los padres de verdad están diciendo
Sin tecnicismos. Sin presiones.
Solo lo que se repite una y otra vez en las reseñas.
Seguridad. Comodidad. Tranquilidad real.
Esto es lo que más destaca.
SEGURIDAD Y CONFIANZA
Confío plenamente en este saco de dormir.
- “Las certificaciones me dieron tranquilidad, y el tejido se siente de muy alta calidad.” Elena M.
- “Duermo mejor sabiendo que no puede echarse nada por encima de la cara.” Paul D.
- “Sin mantas sueltas, sin estrés. Es exactamente lo que quería.” Sophie L.
MEJORA DEL SUEÑO
Nuestro bebé duerme más tiempo ahora.
- “Antes se quitaba las mantas a patadas. Ahora se mantiene calentito toda la noche.” Nina G.
- “La primera noche que lo usó durmió 7 horas seguidas.” Alberto F.
- “Por fin, menos despertares nocturnos solo para comprobar si está tapado.” Laura J.
COMODIDAD Y SUAVIDAD
Muy suave, gran calidad.
- “Mi hijo duerme cómodamente en él. El tejido es suave incluso después de varios lavados.” Jasmine C.
- “Se siente acogedor y calentito sin que sude.” Thomas A.
- “No es nada rígido. Es como un capullo suave.” Marta D.
FÁCIL DE USAR
Cambiar pañales es mucho más fácil.
- “La cremallera de doble sentido es una genialidad. No hace falta quitárselo entero.” Carlos F.
- “Puedo cambiarla sin despertarla. ¡Qué salvavidas!” Julie R.
- “Me encanta el protector de la cremallera, no le roza en el cuello.” Lucía P.
DISEÑO Y APARIENCIA
El diseño es adorable.
- “Me lo regalaron. Todo el mundo preguntó de dónde era.” Angela R.
- “El estampado es aún más bonito en persona.” Marine L.
- “Se siente de alta calidad y queda precioso en la cuna.” Noemi G.
MEJOR DE LO ESPERADO
Superó las expectativas.
- “Más grueso y mejor hecho de lo que pensaba. Excelente relación calidad-precio.” Erika S.
- “No esperaba esta calidad por este precio. Estoy encantada.” Sarah M.
- “Seguro que compraré otro.” Emma B.
¿Aún no lo tienes claro?
Sigue bajando para leer más reseñas de padres que han probado, lavado y confiado en este saco de dormir noche tras noche.
Let customers speak for us
Despeja cualquier duda
We offer two sizes:
• 0 to 6 months: 70 cm long. Not extendable.
• 6 to 18 months: 80 cm long and adjustable to 65 cm using the rear buttons.
Don’t worry too much about the weight. Measure your baby’s length and choose the size accordingly. The sleeping bag has snap buttons to adjust the fit around their body.
The 0-6 month model can be used from the first month, but we recommend waiting until the baby weighs at least 3 kg and has some arm mobility. If in doubt, reach out to us on WhatsApp.
This is a 2.5 TOG model. It’s ideal for room temperatures between 16ºC and 20ºC (cool rooms, mild winters, homes without strong heating). Not recommended for summer or rooms above 21ºC.
No. It’s 100% cotton with certified Oeko-Tex filling that retains warmth without overheating. Parents say it’s warm but breathable — cozy, not stifling.
Yes. All fabrics are certified OEKO-TEX Standard 100. Free from toxins, dyes, and pesticides. Safe for sensitive skin.
Extremely. Here’s why:
• Double zipper with fabric cover to prevent rubbing.
• Snap buttons on sleeves to prevent arms from slipping inside.
• Rear clips to reduce length and avoid excess fabric.
• Official safety certifications in the UK, Europe, and the US (BS 8510:2009, EN 16781, CPSC & CPSIA).
Of course. Up to 60ºC. The fabric is durable and air-dries well. If tumble drying, use low heat.
It’s thicker than some sleeping bags, so it may take a bit longer. We recommend natural drying. Avoid ironing.
Yes. The double zipper lets you open just the bottom part for diaper changes without fully undressing your baby. Many parents highlight this as a key feature
Not at all. It comes neatly folded in a compact box — perfect for gifting. It’s not feather-filled, but cotton-based: cosy yet manageable.
The ergonomic design and adjustable buttons help it stay put. It won’t twist or come loose during even the most restless nights.
Safety, thoughtful design, and lasting quality. This product has been tested by hundreds of families, passed all EU and US safety tests, and is built to last.
Yes. You have 100 days to try it out. But fair warning: very few come back. Ask the parents already using it.
We get it — it feels like a lot for one item. But after a week of use, you’ll wonder how you ever managed without it. A good sleeping bag isn’t a luxury — it’s better sleep for everyone.




Once you try it, there’s no going back.
Sleep changes. Nights feel lighter.
And every parent ends up saying the same:
“Why didn’t we get this sooner?”