Sea to Summit Horizon Insulated Mug

The Sea to Summit Horizon Insulated Mug is a double-walled, handle-free camp mug built from glass-filled polypropylene for backpackers, car campers, and paddle tourers who want a lightweight, packable option that keeps drinks hot without the bulk of a vacuum-insulated bottle. It weighs 105.7 g (3.7 oz) and packs to 9.1 × 9.1 × 12.7 cm. Two color options are available: Tarragon and Bombay.

Comfortable to Hold, Even When Full

The CoolGrip base and sides reduce heat transfer between hot contents and your hands, so the mug stays comfortable to hold through a full cup of coffee or tea at camp. Because the insulation is an air gap between two walls rather than a vacuum layer, the Horizon Mug is noticeably lighter and more compact than vacuum-insulated alternatives. That makes it a practical choice for backpackers counting grams or paddlers managing dry-bag space.

A Lid That Works and a Scale That Earns Its Keep

The self-draining polypropylene sipping lid is designed to minimize spills and channel any excess liquid back into the mug rather than onto your gear or sleeping bag. The built-in molded volume scale lets you measure water or other liquids directly in the mug, which cuts down on the number of items you need to pull out when cooking a dehydrated meal or mixing a drink at camp.

Stackable, Microwave-Safe, and Easy to Clean

The handle-free, stackable shape means multiple mugs nest together without wasted space in a pack or kitchen box. Glass-filled polypropylene is both microwave-safe and dishwasher-safe, so the mug works equally well at a car-camping site with access to a microwave or back home after a trip. The material is rated well above the temperature of boiling water, so normal camp-cooking use will not warp or damage it.

Features

• Double-walled air insulation: keeps drinks hot or cold longer without the weight of vacuum construction
• CoolGrip base and sides: glass-filled polypropylene shell minimizes heat transfer for comfortable handling
• Self-draining sipping lid: channels excess liquid back into the mug to reduce spills
• Built-in volume scale: molded markings allow direct measuring in the mug
• Stackable, handle-free design: nests compactly for efficient packing
• Microwave-safe and dishwasher-safe: BPA-free, PFAS-free, and PFOA-free glass-filled polypropylene

Specifications

Who This Is For and Isn't

The Horizon Insulated Mug suits backpackers, car campers, and paddle tourers who want a lightweight, packable mug that keeps drinks at temperature and stacks neatly with other camp tableware. The air-gap insulation and glass-filled polypropylene construction make it a practical choice for anyone prioritizing low weight and compact packed size over maximum insulation performance.

The Horizon Mug does not use vacuum insulation, so buyers who need the extended heat retention of a vacuum-insulated bottle or thermos should look elsewhere. The mug has no handle, which some users may find less comfortable for very hot liquids. Capacity is not marked on the product listing and should be confirmed before purchase if a specific volume is required.

Common Questions

Does the Horizon Insulated Mug use vacuum insulation?

The Horizon Insulated Mug uses a double-walled air-gap construction rather than vacuum insulation. Air between the inner and outer walls provides insulation while keeping the mug lighter and more compact than a vacuum-insulated alternative, which makes it a practical choice for weight-conscious campers and backpackers.

Is the Horizon Mug free of BPA, PFAS, and PFOA?

Yes. The Horizon Insulated Mug is made from glass-filled polypropylene that is 100% free of BPA, PFAS, and PFOA. The material also meets EU food-grade standards.

Will boiling water damage the mug?

No. The glass-filled polypropylene used in the Horizon Insulated Mug has a melting point well above the temperature of boiling water, so filling it with boiling liquids for normal camp use will not warp or damage the mug.

Can the Horizon Mug go in the microwave and dishwasher?

Yes. The Horizon Insulated Mug is both microwave-safe and dishwasher-safe, making it convenient to use at a car-camping site with access to a microwave or to clean at home after a trip.