The Carp Spirit Magnum 5 Season Sleeping Bag comes under the beady eye of Angler's Mail tackle editor Richard Howard. He's the No.1 products inspector, checking out loads of quality kit every week.

Description: five-season sleeping bag.

Specifications: silicone treated, hollow fibre filling; a fully detachable layer, allowing warmth to be added or removed; micro fleece lining around the head and body; smooth, ripstop material further down; top layer matches the shape of the base layer, fully covering the shoulder area; an oval-shaped opening on the upper layer aids comfortable breathing, even when fully zipped; 10 mm heavy-duty zips; polar fleece baffles; Velcro fastenings and oversized head overlap helps secure the bag to a bed; central securing strap; zipped mesh pockets on both sides; hooded pillow drawcord; rated to minus 20 degrees Celsius; waterproof, ripstop polyester outer fabric; supplied in a stuff sack.

My verdict: Carp Spirit have clearly put a lot of thought into this five-season sleeping bag.

You can zip yourself in it fully, to get warm and comfortable, but still be able to get out of it in double-quick time, so that you can hit a take.

The zip at the side stops short of the bottom, to create a thermal pocket around your feet. There are oversized baffles inside and outside of the zips, to help contain warmth.

The Carp Spirit team has designed and developed the new bags to fit all of their all-new Magnum and BLAX beds, which I will be showing you at a later date.

The detachable inner enables you to sleep comfortably in various temperatures throughout the year.

The attention to detail around the head area addresses certain issues that you can have when trying to sleep in the cold, mainly retaining body heat.

The Standard bag measures 220 x 95 cm, the XL version 230 x 115 cm.

Prices: Standard £169; XL £199.

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