GrowFlex Cotton Baby Sleep Bag

Designed as a year-round essential, this adjustable cotton gauze sleep bag grows with babies through multiple developmental stages. Its lightweight construction, breathable fabrics, and flexible seasonal options make it a practical choice for everyday infant sleep.

Suitable For Infant Toddler

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Product Details

What Makes It Special

Adjustable Growing Design

Snap buttons at the shoulders, waist, and hips allow the sleep bag to transition from a snug swaddle for newborns to a wearable sleep sack for older babies with greater freedom of movement.

Soft Cotton Gauze Comfort

The double-layer crinkled cotton gauze delivers a naturally soft touch, excellent breathability, and efficient moisture absorption, providing comfortable everyday sleep throughout changing seasons.

Expandable Seasonal Collection

The same pattern can be developed with four-layer gauze, six-layer gauze, cooling nylon, or quilted constructions, enabling brands to build coordinated seasonal collections while simplifying product development.

Proven Japanese Market Success

This practical design has achieved strong sales in Japan, combining everyday usability, reliable quality, and multiple fabric options that help brands quickly introduce products with proven consumer appeal.

Specifications

Product Specifications

Product Code

FBS-4C

Product Size

60 cm x 46 cm x 1 cm

(L x W x H)

Net Weight

195 g

Single Pack

box packed

26 cm x 22 cm x 4 cm

(L x W x H)

Carton Pack

Qty: 40 pcs

55 cm x 47 cm x 43 cm

(L x W x H)

Container Qty

20GP 9230 pcs

40HQ 22905 pcs

FAQ

Frequently Asked Questions

Why does this sleep bag remain suitable as babies grow? +

The adjustable snap system extends the usable age range by adapting the fit as babies develop, allowing one product to replace multiple fixed-size sleep bags and improving long-term customer satisfaction.

Why is cotton gauze still one of the most popular sleep bag materials? +

Cotton gauze balances softness, breathability, moisture absorption, and durability, making it suitable for daily use while meeting parents’ preference for natural fibers in infant bedding products.

Why is this design ideal for building a complete sleep bag collection? +

With one proven pattern supporting multiple fabric combinations and seasonal versions, brands can efficiently expand their product range while maintaining consistent sizing, production processes, and brand identity.

Can you provide quotations before sampling? +

Yes. Based on available product information, we can usually provide a preliminary price range to help customers evaluate project feasibility. Final quotations are typically confirmed after sample development and specification approval.

Can you help startups or new brands with small trial orders? +

Yes. We understand that many brands need to validate products before placing larger orders. For example, we supported a Japanese startup customer developing POE air fiber children’s mattresses, play mats and pillows, where the first order quantity was only around 150 units per SKU. By utilizing stocked materials and flexible production planning, we helped them launch products with lower initial investment.

Materials

Materials Used

summer version

EverCool Nylon

100% nylon

Made from 100% cooling nylon yarns, this fabric delivers a smooth, refreshing touch with long-lasting cooling performance. Its Q-max value...

all season version

crepe cotton

100% cotton

Featuring a double-layer cotton construction with a soft crepe texture, this fabric offers excellent comfort, breathability, and moisture management. The...