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Suggested use:  Ultra lightweight trekking; Travel; Hiking; Camping; Cycle touring; Alpine climbing

Season ratings:  Spring/Autumn/Winter

The ultra-light sleeping bag

“You want to escape, fleet footed and unburdened out into the wild. We wanted to design a bag with such escapades in mind. Ultra-light, amazingly warm, our Micro Series unlock so many possibilities.”
Tim Macartney-Snape

The Micro series are our lightest and best warmth to weight ratio sleeping bags. Fully-featured and filled with 850+ Loft Eastern European Goose Down. These bags incorporate our 2D NanoShell™ providing the lightest most breathable water resistant shell.

Designed with a contoured mummy shape, the Micro series is the lightest and most compact sleeping bag in its class. With a unique drawcord opening at the foot for temperature regulation, the Micro series can be converted from an open duvet to a technical box foot mummy sleeping bag.

Form fitting, the Micro series uses a 55/45 fill ratio to insulate your core as the bag rotates with you throughout the night. A security pocket located inside the bag is easily accessible, ideal for stowing electronics. The soft touch lining fabric is down proof and highly breathable.





Box quilted mummy convertible; 2D NanoShell™; differential cut shell; box quilted baffles; 55/45 fill ratio; zip draft tube with anti-snag; hood drawcord with dual adjustment; YKK #3 side zip; drawcord foot closure; large sized internal zip pocket; includes lightweight UltraSil® compression bag, mesh storage cell and laundry bag.

Down: ULTRA-DRY Down™ 850+ Loft 90/10 European Goose Down

Compression bag:  X Small – 6 to 2Ls

If you require a sub-zero warmth sleeping bag in the smallest possible size the McIII is your bag.

Fill weight:

Short   350g | 12oz

Long   380g | 13oz


Bag weight:

Short   710g | 1lb 9oz

Long   780g | 1lb 12oz


Length / zip   options:

Regular         right zip

Long             left zip



Additional information from manufacturer

Sea to Summit