SpecificationReviewsFAQsSize ChartsShipping & Returns

A lightweight sleep system with great next-to-skin comfort and breathability. With the 250g/m2 weight PrimaLoft® ACTIVE as the liner fabric, the Mountain Core 250 offers an open fleece feel but with the added benefit of an unrivalled warmth-to-weight ratio for any fabric.

Externally, the PointZero fabric gives great windproofing with a DWR (Durable Water Repellancy) for when your pack takes a dunking en route to camp. The total package retains the packability you’d expect from OMM.

PrimaLoft® ACTIVE blurs the line between wadding insulation and fabric; PrimaLoft® ACTIVE loosely weaves PrimaLoft®’s industry-leading insulating fibres through a fine polyester mesh. The resultant structure is warmer and less than half the weight of a conventional fleece product – Down like performance when dry whilst also still performing when wet.

Product Specific FAQs

Delivery & Tracking

When will it be delivered?

We aim to ship all orders that we receive by 3 pm UK time between Monday to Friday

How are your items sent

Our main UK Shipping option is with Royal Mail Tracked service
( In some circumstances we may use other carriers, depending on the destination and product )

Is there tracking on my order?

Yes, tracking numbers are sent when the order despatch confirmation is sent, and they have a link to your tracking service
Tracking usually comes live during the evening of the day of despatch of your order

Do you ship outside of the UK?

Yes we do.
Overseas shipping will vary depending on location, weight, and service available.
Delivery times for overseas orders can vary considerably depending on location, please get in touch if
you need details of delivery options by emailing info@extremeadventureraces.com and giving us your address,
including country and Post or Zip code

MENS

MEASUREMENT	SIZE	XS	S	M	L	XL
Chest	inches cm	30-34 80-86	34-36 86-92	36-40 92-102	40-43 102-110	43-46 110-117
Height	feet/inches cm	5’1″-5’4″ 155-162	5’4″-5’8″ 162-173	5’8″-6’0″ 173-183	5’10”-6’2″ 178-188	6’1″-6’4″ 185-193
Waist	inches cm	28-30 70-76	30-32 76-81	32-34 81-86	34-36 86-92	36-38 92-97
Inside Leg	inches cm	28 71	29 73	31 78	32 81	33 84
Outside Leg	inches cm	38 96	39 100	42 106	44.5 113	46 117

WOMENS

MEASUREMENT	SIZE	XS	S	M	L	XL
Chest	inches cm	30-32 78-82	32-34 82-86	34-36 86-91	36-38 91-96	38-40 96-102
Height	feet/inches cm	5’0″-5’4″ 152-162	5’2″-5’6″ 157-167	5’4″-5’8″ 162-172	5’6″-5’8″ 167-177	5’8″-5’10″” 172-182
Hips	inches cm	32-34 81-86	34-36 86-91	36-38 91-96	38-40 96-102	40-42 102-107
Inside Leg	inches cm	28 71	29 73	30 76	31 79	32 82
Outside Leg	inches cm	38 96	39 99	40 102	41 104	42 107

GLOVE MEASUREMENTS IN CENTIMETRES (CM)	XS	S	M	L	XL
Wrist to Index Finger – Back	22.5	23.5	24.5	25.5	26.5
Wrist to Index Finger – Palm	22.5	23.5	24.5	25.5	26.5
Palm Width	8	8.5	9	9	9.5
Cuff Width	8	8.5	9	9	9.5

Shipping
Delivery within 2 to 3 days via tracked courier
Free shipping for orders over £50
more details here

Returns
30 day window to return your item
more details here

OMM Mountain Core 250 Sleeping Bag