eufy Original 15mm Sizing Inserts (2-Pack) for S1/S1 Pro, E10, E20 – Silicone Comfort & Precise Fit

Overview and fit

The eufy Original 15mm Sizing Inserts come in a convenient 2-pack, designed to work with the eufy breast pump family—including S1, S1 Pro, E10, and E20 models. Crafted from food-grade silicone, these inserts offer a soft, skin-friendly touch while helping you achieve a steady, comfortable seal during pumping.

With the right size, you can tailor the pumping experience to your needs. The inserts are built to be easy to install and remove, so you can switch sizes without fiddling with flanges or tools. The result is a more effortless setup that fits your routine as it evolves.

Key benefits

• Compatibility with E10, E20, S1, and S1 Pro pumps for a seamless upgrade.
• Easy to install and use, enabling quick adjustments between sizes.
• Custom comfort through precise sizing that supports a secure seal.
• Safe, food-grade silicone designed for repeated use and gentle skin contact.

Sizing guidance and timing

Nipple size can shift during different breastfeeding stages, so referring to the sizing guide helps you pick a size that feels right for you. Plan to replace flange inserts every 1 to 2 months to maintain comfort and performance as needs change.

Durability, care, and warranty

These inserts are built for regular use, with a typical lifespan noted around 3 months depending on use. If suction or performance declines, consider trying a different size from the 2-pack. The product line is backed by a 90-day limited manufacturer's warranty for reliability.

Usage tips

• Match the insert size to your flange for a comfortable, effective seal.
• Clean after use and inspect for wear to preserve performance over time.

Note: This accessory is designed to complement your eufy breast pump setup. Enjoy the potential benefits of a better-fitting insert as you pump, without promising specific results.