OG+ Portable Chiller/Warmer: Packing for a Full Day Out

Start with the two chilling paths

The OG+ gives you two ways to keep milk cold: use ice, or freeze the Inner Chamber beforehand. Both work, but they change how you pack your bag. Ice is straightforward when you have access to a freezer or ice machine at your destination. Freezing the Inner Chamber ahead of time is better for early starts or long stretches without ice.

Decide which path fits your day before you pack anything else. If you are heading to work and have a freezer available, ice may be simpler. If you are traveling or spending hours outside, a pre-frozen Inner Chamber removes the need to find ice mid-day.

Packing the OG+ for a full day out

Follow these steps to set up your OG+ so it is ready to chill, warm, and feed without extra bulk.

1. Freeze the Inner Chamber or chill your ice: If you are using the freeze method, put the 12oz Inner Chamber in the freezer ahead of time. If you are using ice, pack enough to fill the chamber. The OG+ keeps up to 28 oz cold for 24 hours, so a full day out is well within its range.
2. Assemble the outer chamber and inner chamber: The OG+ includes a 38oz Outer Chamber and a 12oz Inner Chamber. The outer chamber holds your milk, and the inner chamber holds the ice or stays frozen to provide the chill. Make sure both are clean and dry before loading.
3. Layer ice or frozen chamber with your milk: Place the frozen Inner Chamber (or ice) into the outer chamber first, then add your milk. This layering helps maintain cold temperatures. Do not overfill beyond the 28 oz chilling capacity if you need the full 24-hour performance.
4. Attach the connector and cap: Use the included connector and small cap to seal the unit. The OG+ is designed to be leak-resistant for transport, but always double-check that the cap is secure before putting it in your bag.
5. Pack the upper cup for warming or feeding: The 7oz Upper Cup can be used for warming or as a bottle. If you plan to warm milk, bring the cup along. It nests with the system for compact carrying.
6. Check pump compatibility: The OG+ works with all major pumps, but some pumps may need an adapter. Verify your pump model before you leave to avoid a mid-day surprise.

What the OG+ holds and how it performs

• OG+ Portable Chiller/Warmer: 24 Hours of Chill Power - keeps up to 28 oz cold for 24 hours - no bulky coolers, no ice packs. This is the core promise for a full day out: you can trust it to keep milk cold from morning to evening without extra cooling gear.

  

• OG+ Portable Chiller/Warmer: Extra Large Capacity - stores up to 38 ounces total. The total capacity includes the outer chamber and other parts, so you can carry enough for multiple feeds while still using the chilling function for up to 28 oz.
• OG+ Portable Chiller/Warmer: 2 chilling options: use ice OR freeze the Inner Chamber beforehand You can adapt to your day: ice is easy to replenish, while a pre-frozen chamber suits long outings without freezer access.

Layering ice and milk: what to keep in mind

The OG+ is designed to chill milk efficiently, but how you layer ice and milk affects performance. Put the ice or frozen Inner Chamber in first, then add milk. This positions the cold source in direct contact with the outer chamber walls, helping maintain temperature.

If you are using ice, use enough to fill the Inner Chamber. Do not pack the outer chamber so full that the inner chamber cannot fit properly. The 28 oz chilling capacity is your guide for maximum cold performance; the total 38 oz capacity includes other components and may not chill as effectively if you exceed 28 oz of milk.

What to pack alongside the OG+

The OG+ replaces bulky coolers and ice packs, but a few extras make your day smoother.

• Pump adapter (if needed): Check if your pump requires an adapter to connect to the OG+. The OG+ is compatible with all major pumps, but adapters are sometimes necessary.
• Extra caps or lids: The OG+ comes with a small cap and connector, but if you plan to use the Upper Cup as a bottle, bring any additional lids you prefer.
• Cleaning wipes or a small brush: The OG+ is fully dishwasher safe, but on the go, a quick rinse or wipe can help between uses.

Warming on the go

The OG+ doubles as a bottle warmer. The 7oz Upper Cup can be used to warm milk, though the supplied information does not specify a warming method or time. If you need to warm milk, test the temperature carefully before feeding. The OG+ is not a substitute for a dedicated bottle warmer, but it adds flexibility when you are away from home.

Materials and safety

• OG+ Portable Chiller/Warmer: Absolutely no BPA, BPS, DEHP, lead, or harmful chemicals. This matters for parents who want to avoid potentially harmful substances in feeding gear.
• OG+ Portable Chiller/Warmer: Food-grade stainless steel, platinum silicone, and safe, PFAS-free coatings. These materials are durable and designed for repeated use, which supports the Lifetime Warranty.

A note on capacity and ice

The OG+ holds up to 38 oz total, but the 24-hour chill performance is rated for 28 oz. If you fill the outer chamber beyond 28 oz, you may not get the full 24 hours of chilling. For a full day out, aim to keep milk volume at or below 28 oz if you need reliable cold storage. The remaining capacity is for the inner chamber, upper cup, and other components.