# ATOZ Kids Animal Onesie Pajamas, Warm Flannel Zip-Up Costume

ATOZ kids' animal onesie pajamas in warm flannel work for winter lounging, Halloween, and Christmas dress-up.

- [Original product page](https://www.ofertitastop.com/us/product/atoz-kids-animal-onesie-pajamas-warm)
- [View offer](https://www.ofertitastop.com/us/visit/atoz-kids-animal-onesie-pajamas-warm)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-21T01:45:19.556Z
- Brand: ATOZ
- SKU: ofertitastop-us-154215
- Category: Apparel & Accessories > Clothing > One-Pieces > Jumpsuits & Rompers
- Source store: amazon US
- Active deal: Yes
- Price: 19.99 USD
- Previous price: 29.87 USD
- Discount: 33%
- Rating: 4.4 / 5
- Reviews: 2671

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

Kids who need a cozy one-piece for winter lounging or an animal-themed costume get both uses in the ATOZ Kids Animal Onesie. Its flannel fabric makes it suitable for pajamas, while the playful animal design brings a distinctive look to dress-up occasions.

A zipper makes the onesie easy to put on and take off. Wear it as sleepwear or add clothes underneath for a costume-ready outfit when the weather calls for another layer.

The unisex-child design is offered in sizes 100 through 140, with height and age guidance for choosing a size. Use the chart below as a starting point when selecting the fit.

## Everyday use

This one-piece works across bedtime, relaxed time at home, and occasions such as Halloween, Christmas, carnival, cosplay, and birthday parties. The flannel material is described as warm, making the pajamas useful during colder seasons. For an event, the animal styling helps create a complete costume look without needing to build an outfit from separate themed pieces.

The zipper is a practical detail for dressing and changing. If a child plans to wear clothing underneath, the listing notes that layering is an option, allow for that when choosing from the size chart. For everyday care, hand wash and lay flat to dry. If ironing is needed, use low heat to help prevent fading.

## Spec sheet

- Type: Unisex-child animal onesie pajamas and costume
- Material: Flannel
- Closure: Zipper
- Size 100: Height 90–108 cm, age 2–3 years
- Size 110: Height 102–110 cm, age 4–5 years
- Size 120: Height 114–122 cm, age 6–7 years
- Size 130: Height 126–134 cm, age 8–9 years
- Size 140: Height 138–146 cm, age 10–11 years
- Care: Hand wash and lay flat to dry, iron on low heat if needed

## Benefits

The main advantage is versatility: the same flannel one-piece can serve as warm sleepwear and as an animal-themed outfit for a party or holiday. That makes it a useful choice for families looking for a costume that can also be worn at home, rather than a piece intended only for a single event. Its zipper supports straightforward dressing, and the size chart gives height and age references to guide selection.

Buyer feedback describes the fabric as soft and cozy, though fit experiences vary. Some customers find the sizing roomy, while others report that the sleeves, legs, or torso feel short. Reports about zipper performance are also mixed, and some buyers mention seams coming apart. Using the listed height guidance and following the care instructions can help inform the purchase and routine handling.

## Is it worth it?

Choose this ATOZ onesie when the priority is a warm flannel pajama that can also work for seasonal dress-up, cosplay, or a birthday party. Its one-piece animal styling, zipper closure, and size guidance make it a practical fit for children who will use it both for lounging and for themed occasions. For a child’s everyday winter routine or a planned costume event, it brings those uses together in one garment.

## Images

![ATOZ Kids Animal Onesie Pajamas, Warm Flannel Zip-Up Costume — 1](https://www.ofertitastop.com/i/tijIcmZBw_pOkv0h17T25UdHiYy-Af-AE6pUAo01ufbZBKWTLI-8n55c21jyghEp1NMAxR6L_gJWE7YYJezGgXvuR-icf34TVszvKRpUsKXnPPe6nufV6_jNwQ.jpg)

![ATOZ Kids Animal Onesie Pajamas, Warm Flannel Zip-Up Costume — 2](https://www.ofertitastop.com/i/KnWbJK9YseXnal4Ee-XzVPRvv4H3-boAE2MTesifyWH9gTkOTylH487X1MC7mBlE2-SuT5hmVR09ncL9LQR3SZOxWkMLWWpWZ1MF3kOPvYXZ84LxeDcZGIbtBg.jpg)

![ATOZ Kids Animal Onesie Pajamas, Warm Flannel Zip-Up Costume — 3](https://www.ofertitastop.com/i/N47L89QSMS_XBc2Ru4rJYE-4_GpAgMYik2PyBpk8KXqKetVw-retm6EIbeaoK1v-Ljp3rC4AVChfCfAOdAYKNRBgQ-agwbwsFH9oPhyu0Ops3kYjlvJl5ZHWJg.jpg)

![ATOZ Kids Animal Onesie Pajamas, Warm Flannel Zip-Up Costume — 4](https://www.ofertitastop.com/i/suwdnx_rCmZYPXc1ceICJ1zQ59iCEvep6_rZUIjS5ZXW4FC2C1md828zp2HEFKHXg7z02OzwOInN_eVE0Ei9F7YOqSpT047PYsF-5r-Y35DVSjFZFv1EHJLinw.jpg)

![ATOZ Kids Animal Onesie Pajamas, Warm Flannel Zip-Up Costume — 5](https://www.ofertitastop.com/i/md-Ptp_1qlkF4a6RFkVHRB1b7GRgw_iF0Ku-90RvmalRjVIja-SPkRtTVRLNqcTjAUz9OsaSVQCuvPQRMDXUwTtcG6Wxp5X09fmdBbD2cARUFdxRb8OIjHJVSw.jpg)