---
product_id: 98727068
title: "The Upright Bottle Bittylab Bare Air-Free 4oz Single for breastmilk or Baby Formula, Anti-Reflux, Anti-Colic, Anti-Gas, Fuss or Sleep Troubles. with Easy-Latch & Perfe-Latch Nipples. 0-6 Months."
brand: "bittylab"
price: "¥9297"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/98727068-the-upright-bottle-bittylab-bare-air-free-4oz-single-breastmilk
store_origin: JP
region: Japan
---

# 4oz perfect infant portion True Air-free patented tech BPA & toxin-free medical silicone The Upright Bottle Bittylab Bare Air-Free 4oz Single for breastmilk or Baby Formula, Anti-Reflux, Anti-Colic, Anti-Gas, Fuss or Sleep Troubles. with Easy-Latch & Perfe-Latch Nipples. 0-6 Months.

**Brand:** bittylab
**Price:** ¥9297
**Availability:** ✅ In Stock

## Summary

> 🍼 Elevate feeding time—because your baby deserves the air-free advantage!

## Quick Answers

- **What is this?** The Upright Bottle Bittylab Bare Air-Free 4oz Single for breastmilk or Baby Formula, Anti-Reflux, Anti-Colic, Anti-Gas, Fuss or Sleep Troubles. with Easy-Latch & Perfe-Latch Nipples. 0-6 Months. by bittylab
- **How much does it cost?** ¥9297 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/98727068-the-upright-bottle-bittylab-bare-air-free-4oz-single-breastmilk)

## Best For

- bittylab enthusiasts

## Why This Product

- Trusted bittylab brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Upright-Only Design:** Feeds baby in a vertical position to minimize fuss and sleep troubles.
- • **Safe & Pure Materials:** Crafted from BPA, PVC, phthalate, and nitrosamine-free medical-grade silicone.
- • **True Air-Free Feeding:** Patented syringe-like design expels air, reducing colic, reflux, and gas.
- • **Clinically Proven Relief:** 75% of infants showed no GER after 2 weeks—real results for peace of mind.
- • **Easy-Latch & Perfe-Latch Nipples:** Supports both breastfed and formula-fed babies with flow-controlled feeding.

## Overview

The Upright Bottle Bittylab Bare Air-Free 4oz is a clinically proven, anti-reflux baby bottle designed for infants 0-6 months suffering from gas, colic, and GERD. Featuring patented air-free technology and an upright feeding position, it reduces discomfort and fussiness. Made from medical-grade, toxin-free materials, it supports both breastfed and formula-fed babies with specialized nipples, ensuring safe, flow-controlled feeding every time.

## Description

The Upright Bottle Bittylab Bare Air-Free 4oz Single for breastmilk or Baby Formula, Anti-Reflux, Anti-Colic, Anti-Gas, Fuss or Sleep Troubles. with Easy-Latch & Perfe-Latch Nipples. 0-6 Months.

## Features

- For Infants with Severe Gas, GER and GERD Symptoms, Midnight Colic, Daytime Fuss, Sleep Troubles. Assemble and feed per instructions ONLY. (https://amzn.to/2U8llLS). If you need help contact us, a feeding specialist is available.
- Clinically proven: 75% of infants no longer had GER after using Bare Air-free for two weeks.
- ONLY feed in vertical-upright position. MUST SEE INSTRUCTIONS. (https://amzn.to/2U8llLS)
- Removes the air out of the feeding. True Air-free Feeding. Vertical-upright feeding position. Flow-controlled feeding.
- Anti-leak, user-friendly, easy-to follow instructional video (https://amzn.to/2U8llLS)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 5.8 x 5.9 x 2.8 inches |
| Is Discontinued By Manufacturer | No |
| Material Type | Medical-grade, food contact silicone and polypropylene. FREE of bpa/pvc/lead/phthalates/nitrosamines |
| Material free | BPA Free, Nitrosamines Free, PVC Free, Phthalates Free, Polycarbonate Free |
| Care instructions | Dishwasher Safe - TOP RACK ONLY, Do not use bottle sterilizers - 5-minute Boil-sterilize only, Follow assembly instructions (https://amzn.to/2U8llLS), If you gettings dripping or spills, watch the video or call us, we'll help you step-by-step, It's only a 3-minute video https://amzn.to/2U8llLS watch it to the end. DO NOT USE BARE as a regular bottle |
| Additional product features | DO NOT TIP or HOLD HORIZONTALLY, just keep Bare® right side up, Feeds in an upright position. Baby upright. Bare® Air-free right side up, Feeds with suction to allow auto-pace feeding, Perfe-latch® nipple is for exclusively breastfed babies only, True Air-free feeding. Patented syringe-like technology allows to expel air |
| Number Of Items | 1 |
| Style | The only True Air-free Feeding Device |
| Batteries required | No |
| Dishwasher safe | Yes |
| Bottle nipple type | Perfe-latch® for breastfed. Easy-latch® for all |
| Bottle type | For babies with reflux, gas, colic, sleep troubles |
| Item Weight | 4 ounces |

## Product Details

- **Brand:** Bittylab
- **Material Type Free:** BPA Free, Nitrosamines Free, PVC Free, Phthalates Free, Polycarbonate Free
- **Item Weight:** 4 Ounces
- **Bottle Nipple Type:** Perfe-latch® for breastfed. Easy-latch® for all
- **Capacity:** 4 ounces

## Images

![The Upright Bottle Bittylab Bare Air-Free 4oz Single for breastmilk or Baby Formula, Anti-Reflux, Anti-Colic, Anti-Gas, Fuss or Sleep Troubles. with Easy-Latch & Perfe-Latch Nipples. 0-6 Months. - Image 1](https://m.media-amazon.com/images/I/41g2Qv5YYPS.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- The Upright Bottle Bittylab Bare Air-Free 4oz Single for breastmilk or Baby Formula, Anti-Reflux, Anti-Colic, Anti-Gas, Fuss or Sleep Troubles. with Easy-Latch & Perfe-Latch Nipples. 0-6 Months.
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-31*