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Slash weight from your kit list with this award-winning ultralight modular bag, designed for thru-hiking, bikepacking, and mountain running.
Slash weight from your kit list with this award-winning ultralight modular bag, designed for thru-hiking, bikepacking, and mountain running.
Rab

Rab Mythic Ultra 120 Modular Left Zip Sleeping Bag in Cloud/Graphene

£231.00 £385.00 40% off
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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

60 Day Returns

We are happy to accept returns of unused goods sold in store and shipped in the UK within 30 days of purchase. Please let us know they are coming back though!

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. This is only for UK purchases.

If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund. Up to 60 days after your purchase we now offer exchange for other goods or a voucher code to the value of the returned goods (to the original purchaser). Voucher codes are valid for 12 months.
If 60 days have gone by since your purchase, it is not eligible for return.

Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.

Additional non-returnable items:

  • Gift cards
  • Downloadable software products
  • Some health and personal care items
  • Customised items or items we have ordered in especially for you.

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

There are certain situations where only partial refunds are granted: (if applicable)

  • Book with obvious signs of use
  • Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
  • Any item without it's original tags and packaging.
  • Any item that is returned more than 30 days after delivery

Refunds (if applicable)

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days. Your refund includes standard rate shipping, not premium shipping services.

Late or missing refunds (if applicable)

If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted.

If you’ve done all of this and you still have not received your refund yet, please contact us at [email protected].

Sale items (if applicable)

Sale items can be refunded on the same terms as other items.

Exchanges (if applicable)

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at [email protected] and send your item to: 41 Castle Street, LLANGOLLEN, LL20 8RU, United Kingdom.

Gifts

If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.

Shipping

To return your product, you should mail your product to: 41 Castle Street, LLANGOLLEN, LL20 8RU, United Kingdom.

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

The Post Office is often the most expensive service for sending parcels, a quick internet search will give you lots of options.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

None of the above affect your statutory rights.

Christmas Delivery 2025

Please make sure you send your parcel in plenty of time if you wish for it to arrive in time for Christmas

These are the courier published dates, we can't guarantee them. We try and get orders out after the published deadlines, but it takes time to age verify for bladed items, if an adult with ID isn't in then Parcelforce or Royalmail cannot legally deliver.

Parcelforce - Not for bladed items.

  • Next day services: 20 December
  • Two-day services: 19 December

Royalmail

Tracked 48 20 December

Tracked 24 19 December

Tracked 48 Age Verified 19 December

Tracked 24 Age Verified 20 December

Special Delivery (up to 1kg only on system) 23 December

FREE Shipping starts at £80

Rab Mythic Ultra 120 Modular Left Zip Sleeping Bag in Cloud/Graphene

Season:Previous Season

Brand:Rab

Code:QSI-40-CGR-REG-LZ

The award-winning Mythic Ultra 120 Modular cuts weight and bulk by only including insulation where it’s not already provided by your mat.

The upper bag, and underside of the legs, is filled with ultra-high-lofting 900FP down and heat-reflective TILT, reducing radiant heat loss without a gram of unnecessary weight. Meanwhile, the lower bag hooks around the mat which insulates you from the ground.

With a tiny pack size and uncompromised comfort, it’s the perfect sleeping bag for long-distance trekking, bikepacking, and multi-day mountain runs.

The lightweight stitch-through construction is low-bulk, with the down strategically positioned to optimise warmth. Secure the bag onto your sleep mat using the back harness, while the insulated side baffles marry up to the side of the mat to keep cold spots at bay. We’ve chosen a diagonal zip to allow easy entry and exit, as well as plenty of ventilation on warmer summer nights. Stash clothing in the hood sleeve to create an ultralight pillow, further streamlining your kit list.

The Mythic Ultra 120 Modular is hand-filled in the UK to ensure that its down has never been compressed before use, retaining its loft for your first epic adventure.

Due to its construction, this bag does not meet the criteria for an EN test. Our sleep limits are based on our many years of experience, supplementary testing, and athlete and test team feedback. Head over to Rab Lab to find out more about the Rab Sleep Limit.

Features:

  • Packed Size:32cm x 16cm (12.6in x 6.3in)
  • Product Code:QSI-40
  • TILT and 900FP down on upper bag and lower legs achieves high warmth to weight ratio
  • Integrated mat sleeve secures uninsulated area of the bag to air mat
  • Rab sleep limit of 0°C (32°F) achieved with air mats rating R4 or above
  • diagonal zip entry with YKK® 2-way zip allows easy entry and exit, and versatile venting
  • Pillow sleeve designed for folded clothing for use as a ultralight pillow
  • Down-filled anti-snag zip baffle
  • Lightweight roll-top compression sack included
  • Filled in Derbyshire UK
  • Optimally filled, lightweight stitch-through construction

Specifications:

  • Main Fabric:10D Recycled Atmos™ (27gsm) with Fluorocarbon-Free DWR
  • Fabric Lining:10D Recycled Atmos™ (28gsm) with Thermo Ionic Lining Technology (TILT)
  • Insulation:900FP European Goose Down with Nikwax Fluorocarbon-Free Hydrophobic Finish (120g/4.2oz)
  • Weight:330g/11.6oz
  • Rab Sleep Limit:Rab sleep limit of 0°C (32°F) achieved with air mats rating R4 or above
Sizing Information

MEN'S UPPER BODY SIZING

HOW TO MEASURE

  • Arm length- Measure from the side of your neck to wrist fold, over the top of your arm.
  • Chest– Measure around the fullest part of the chest with your arms down. Usually just under the pits.
  • Waist- Measure around the narrowest part of the waist. Your waist is at the small of the back or where your body bends if you lean to the side

MEN'S UPPER BODY MEASUREMENT CHART

XSSMLXLXXL
Chest90 cm
35.5"
94 cm
37"
102cm
40"
109cm
43"
117 cm
46"
122 cm
48"
Waist71 cm
28"
76 cm
30"
81 cm
32"
86 cm
34"
91 cm
36"
96 cm
38"
Arm Length83 cm
33"
83 cm
33"
86cm
34"
89cm
35
91 cm
36"
91 cm
36"

IMPORTANT: These are body measurements, not the measurements of our garments.

While all of our garments are sized to these measurements, you will find that the cut on jackets designed for use in more extreme environments will be slightly more generous in the expectation that these designs will be used with additional/thicker mid-layers. If you plan on using a jacket like this with fewer layers beneath it, please keep this in mind when selecting your size.

REGULAR FIT FOR GARMENTS

Designed to be versatile our Regular Fit garments are not closely fitted making them ideal forcross-seasonal use and multi-layering. Regular fit garments are contoured, with room for movement.

SLIM FIT FOR GARMENTS

Our Slim Fit garments are designed to be worn closer to the body or over layers such as baselayers and light mid-layers. Slim fit garments are closefitting for maximum performance when moving dynamically.

EXPEDITION FIT FOR GARMENTS

Expedition garments are designed to be worn in colder conditions over more layers of clothing than our other fits and are oversized slightly to allow for this.

MEN'S LEGWEAR SIZING

HOW TO MEASURE

  • Waist- Measure around the narrowest part of the waist. Your waist is at the small of the back or where your body bends if you lean to the side.
  • Leg Length– Measure from the crotch (top of inner thigh) to where you want the hem to sit on your foot or shoe.

MEN'S LEGWEAR SIZING CHART

Waist

XS-28"

S-30"

M-32"

L-34"

XL-36"

XXL-38"

Short
Leg

-

-

30"/XS

30"/XS

30"/XS

-

Regular
Leg

32"

32"

32"

32"

32"

32"

Long
Leg

-

-

34"/XL

34"/XL

34"/XL

34"/XL



GAITERS SIZING CHART - MEN

S

M

L

Men's shoe size

5-7 (UK)
6-8 (US)
38-41 (EU)
7-9 (UK)
8-10 (US)
41-44 (EU)
9-12+ (UK)
10-13+ (US)
43-47+ (EU)


MEN'SGLOVES SIZING

HOW TO MEASURE

  • Circumference of hand – Measure around the fullest part of the hand; around the knuckles and excluding the thumb.
  • Length of Hand – Measure from the wrist to the top of your middle finger.

MEN'S GLOVES SIZING CHART

Circumference

of hand

S

18-19cm
7-7.5"

M

20-21.5cm
8-8.5"

L

23-24cm
9-9.5"

XL

24-25.5cm+
9.5-10"+

Length of hand

16.5-18cm 6.5-7"

19-20cm 7.5-8"

21.5-23cm 8.5-9"

23-24cm 9-9.5"

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