3-4 season sleeping bag

• Hollow fibre cotton synthetic fill, from 100 g to 700 g depending on the model
• Internal dimensions 210 x 75 cm with extra head space
• Water-resistant polyester shell with a double slider zip
• Weights from 0.7 kg to 2.4 kg across the range
• Maker comfort ratings from 25°C (100 g) down to 0°C (700 g); the extreme figures of 15°C to -10°C are survival limits, not comfort
• Four colours: Green, Blue, Purple and Red; opens flat to double as a mat, storage bag included
• Dispatched after 3 to 5 business days of processing, delivered within 10 to 20 business days

One model, five fill weights

The same bag comes in five fill weights, so you pick the warmth you need instead of over-buying. The hollow fibre fill is synthetic, which keeps insulating when it picks up damp and dries faster than down, a sensible choice for the British climate. At 210 x 75 cm with head space, you get room to move, and the double slider zip lets you vent from the top or the feet. Opened flat, it works as a groundsheet or a mat.

Match the fill to the season

Read the maker comfort figure first: 25°C at 100 g suits warm summer nights, while 0°C at 700 g handles cold shoulder-season camping. The extreme numbers, from 15°C down to -10°C, are survival limits you should not plan a night around. Buy for the comfort rating and the trip you have in mind, and add a liner if you expect the colder end. Returns within 30 days of delivery.