The Themis Breastmilk Cooler

Our Themis Breastmilk Cooler by St. Ouro is designed to be hidden in plain sight — it carries what you need without asking you to announce it. No signals, no compromises — just a bag that moves through your life as seamlessly as you do.

At first glance, it's simply a structured top handle handbag in genuine nappa split leather, closing with a gold twist-lock clasp. Inside, a more considered system: a dual-compartment design separates life from logistics. The upper compartment, has a magnetic closure that keeps essentials within reach — keys, headphones, cards, lipstick — while the lower compartment is fully insulated and leak-proof, closing with its own zip enclosure to keep the seal secure, engineered to preserve breast milk for hours. Everything has a place. Nothing feels clinical. Because "functional" should never mean forgotten.

Functionality Details

• Healing + Recovery: A dedicated, insulated compartment keeps what you need to carry for feeding or medications — separate and protected, so nothing requires extra handling or a second bag.

Overall bag dimensions: 7.5" H x 7.5" W x 5.8" D.

Expertly tailored to fit cordless pumps and breast milk storage bags.

Compatible with most cordless pumps including Elvie and Willow. We recommend checking dimensions before purchasing.

Generous capacity holds up to 22 oz of breast milk.

Crafted in genuine nappa split leather. Features a seamless, antimicrobial interior lining for a clean, hygienic environment.

Includes ice pack for optimal cooling performance.

Care Instructions
• Wipeable interior ensures effortless maintenance and lasting freshness.

• Clean the cooler using a damp cloth with mild soap or a non-abrasive disinfectant wipe; allow to air dry completely before use.

Safety Information
• Inspect ice packs prior to each use and discontinue use if any damage, leakage, or deterioration is observed.

• Use and maintain the product only under normal and reasonable conditions in accordance with provided instructions.

• Avoid harsh chemicals, abrasive cleaners, or submerging the product, as this may damage materials.

• XLPE foam insulation maintains a cool temperature for up to 8 hours when used as directed.

Try items in the comfort of your own home. If they are not quite right, you have 30 days to request an exchange or return and send them back to us. Learn more about our shipping options and return policy here.