Naturehike Penguin Mummy Sleeping Bag

Pick by the coldest night you expect. The P300 is rated comfort 6 °C and limit 1 °C; the P400 comfort 1 °C and limit -4 °C. The P300 suits summer and early fall; for late-fall nights near freezing take the P400, and add a liner and warm layers below its comfort rating.

Naturehike's chart shows a comfort range above the comfort figure, a transition range between comfort and limit, and a danger range from limit down to extreme. Plan around the comfort number. Near the limit you will sleep cold and curled up, and the extreme figure is a survival limit, never a camping temperature.

No. Naturehike markets it as a winter bag, but even the P400's comfort rating is 1 °C, which suits spring and fall nights, not a Canadian winter. For nights well below freezing choose a bag rated for the temperature you expect, and always sleep on an insulated pad.

A synthetic fill Naturehike calls down-like cotton: 300 g per square metre in the P300 and 400 g in the P400, under a pongee shell with a soft washed-cotton lining. The P300 weighs about 1.5 kg and packs to Ø25 x 36 cm; the P400 about 1.85 kg and Ø28 x 38 cm.

It is 220 x 80 cm: a 190 cm body plus a 30 cm hood, cut as a mummy that narrows to about 43 cm at the foot. The shape keeps heat in but leaves less room to sprawl, so if you sleep on your side with your knees bent, ask us to unpack one in store.

Yes. The fill under your body is squashed flat, so the ground, or cold air under a cot, pulls heat away however warm the bag is. Put an insulated pad under it, such as the Naturehike Thickened Egg Nest foam mat, and close the hood on cold nights.

Check the care label first. Spot-clean the shell between trips and air the bag out after each night. For a full wash use a front-loading machine or a tub, cold water and mild soap, then dry it completely. Store it loose, out of its stuff sack, so the fill keeps its loft.

Yes. Pick up at Richmond Hill, Newmarket or Ottawa when your model is in stock there. Unused sleeping bags in original packaging can be returned within 14 days; items discounted more than 39% are final sale.