Nanowave 25 Sleeping Bag (-4°C)

Find the right Marmot sleeping bag for your next adventure. Choosing the correct length and shape helps maximise warmth, comfort and sleeping efficiency.

Men's & Unisex Sleeping Bags

Marmot offers several sleeping bag shapes and lengths. Available sizes vary by model.

This table shows Marmot's general size categories. Not every sleeping bag is available in every size.

Women's Sleeping Bags

Women's-specific sleeping bags may have different proportions and insulation distribution to suit their intended fit.

Choosing the Right Length

Sleeping bags should provide enough space for you to lie comfortably without excessive empty space around your body.

Important: Maximum user height and internal dimensions can vary between sleeping bag models. Always refer to the specifications for the exact sleeping bag you are purchasing.

Understanding Sleeping Bag Shapes

Mummy: A tapered design that reduces excess space and helps retain warmth. Popular for hiking, backpacking and colder conditions.

Slim Mummy: A more closely fitted mummy shape designed to minimise unnecessary space and weight.

Semi-Rectangular: Offers additional room through the body and legs, making it a comfortable option for sleepers who prefer more freedom of movement.

How to Choose Your Sleeping Bag

1. Check your height: Compare your height with the maximum user height listed for the sleeping bag.
2. Consider your sleeping position: If you move frequently or sleep on your side, you may prefer a roomier shape.
3. Check the width: Look at the shoulder, hip and footbox measurements if you prefer additional space.
4. Choose the appropriate warmth rating: Consider the lowest temperatures you expect to encounter and the bag's published temperature ratings.
5. Consider packability: Weight and packed size are important when carrying your sleeping bag on multi-day adventures.

Getting the Best Fit

A well-fitting sleeping bag should allow comfortable movement without leaving excessive unused space that needs to be warmed by your body.

If you are near the maximum recommended height for a particular size, compare the next length up before purchasing.

Fit tip: Sleeping bag size is separate from temperature rating. Always check both the fit specifications and the manufacturer's published temperature information before choosing your bag.

Please note: This guide follows Marmot's official sleeping bag sizing categories. Exact dimensions and available sizes vary by model.