Product Colors and Sizes
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
- Black Friday product
- New Deal product
- Cyber Monday product
- Clearance product
- Deal product
- Best Seller product
- Ecodesign product
- New product
- Staff Pick product
- In The News product
- Innovation product
- product
Women's Ultralight Backpacking Backpack 45+10 L - MT900 UL
Thanks to the design choices, FORCLAZ reduced the weight of this bag to just 2.9 lbs without compromising on durability. The bag can be tailored to your needs thanks to the multi-purpose straps.
Free shipping over $49
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
About this item:
- This backpack is made for multiple days hiking or trekking in autonomy. You can carry everything you need to camp, drink and eat on your back with comfort.
- The MT900 ULTRALIGHT only weighs 2.9 lbs and can contain a total volume of 45 liters which we recommend for a trip under 2 weeks long. The top of the bag is adjustable and can hold an extra 10 liters of volume.
- This backpack has plenty of features if you are looking for a lightweight technical option at a great price: AIR concept back ventilation, rain cover, water bottle holder, hiking poles holder, 7 pockets and a compartment for a water bladder for easy hydration.
- The AIR concept: in order for your back to dry faster, we added a mesh on top of a ventilated structure. Ideal for long and sweaty day hikes from one camp to another !
- This is a women's backpack: This bag has been conceived for a feminine morphology (torso and hips). We recommend to stick to your gender when you choose a bag for comfort purposes when carrying your it on your back.
- 10-year warranty: the fabric of the bag is ultra resistant and Decathlon is proud to offer this warranty for any defect that could appear in the next 10 years.
Product Videos
Product Features

Carrying comfort
Perfect for women carrying up to 12 kg. Ventilated back, adjustable height
Multiple compartments
Full height access to the central section, 7pockets (cent.sect:3, lid:2, belt:2
Versatility
Pole holder, rain cover, side pockets which can be accessed when walking
Abrasion resistant
Main fabric in 100D RS polyamide, reinforced bag bottom (210D RS)
Ventilation
Reinforced frame with mesh reducing pressure and letting the back breathe.
Easy hydration
Internal compartment for a water bladder (not included)
Weight
1.3 kg. The empty weight indicated is that of our benchmark sample
Product Lifestyle Image Gallery
Image Gallery





Questions & Answers
There are no questions
Be the first to post a question
Product Customer Reviews

Very practical, lightweight, adapts very well to my 1.60 m height I love all its pockets I added two small straps on the top of the bag I can't wait to go on the GR with it
It's a very good, ultra-light bag that opens completely on the front with pockets on the side and the front but the 2 large side pockets are closed with a drawstring, be careful small objects can slip! However, it absolutely did not suit me, I was not able to use it once it was filled, because I am less than 150 cm tall and I was not able to adjust it correctly! I had my head in the bag with the roof pockets and by shortening it I was losing interior space! But very light and good material! I recommend it for people over 160 cm tall!
Because I wanted a lighter backpack for my walking holiday, I switched from a very nice, but 2.2 kg heavy, Osprey backpack to this backpack, more than 1 kg. lighter. I was hesitant to do this because of some critical reviews on this site. Osprey also has a light backpack: the Eja pro and I could compare it with this. For me, the front opening with a zipper and the much larger pockets on the hip belt were the deciding factor in choosing this Forclaz backpack. And I haven't regretted it. The wearing comfort has proven to be very good for me. And, after walking with it for over 3 weeks, I can say: it is a great backpack. Comfortable to wear when weighing 6 to 8 kg.
Used 3 weeks in Norway. Perfect both in terms of weight and storage.
Bag designed for a woman's body shape, however I am a man of 1.75 and 75kg with a thin waist and suits me better than the male model in terms of size and adjustment of the height of the bag Not super comfortable in terms of the frame at the level of the axes but you get used to it. On the other hand, the bag is really well thought out and modular and rather light (not ultra light)
I used this bag on a demanding 16-day trek. The bag was very comfortable, the pockets are easy to access and things are easy to store inside. There are plenty of strings that can be used, for example, to put out your laundry. So I recommend this bag++
1 little high when you are 1 average height 164 cm
I will use it for long flat trips
Light and practical bag of good capacity. Too bad it is not possible to remove the iron support to be able to put it in the washing machine.
So, I am extremely satisfied with this piece. 1.3 kg Bobík, in which I can pack for both 3 days and 10 days. The ratio of weight, price, functionality and appearance is 10/10 for me. The padded back, shoulder straps and waist pack are the top ceiling for me. The backpack is really easy to wear and I appreciate the structure of it. Both from the inside and especially from the outside. The only thing I would complain about is the raincoat in the top pocket. I would appreciate it if it was lower, for example like in 20l backpacks. Personally, I would rather use this top pocket in a different way than on a raincoat. I also recommend setting up the backpack correctly. On the first day of the trek, I had a problem with bruised hips, because my backpack was sitting too low. But otherwise it's a tutu :)
I at first thought I was missing parts of this bag nope just mistaken , I taken it on two camps love it and can’t wait to take it out more.
The bag is full of tricks and light. The carrying comfort is average, the weight is not distributed over the width of the belt. Its pear shape is not ideal for storing sleeping bags, tents, mattresses and weekend belongings
Lightweight and super comfortable straps
Perfect, not too big to travel in the airplane cabin and can be extended. Ideal for 1 day hike, good quality/price.
Light backpack, lack of foam thickness at the waist.
Additional Product Information
Composition
Main fabric: 100.0% Polyamide ; Lining: 100.0% Polyamide ; Yoke: 100.0% Polyamide ; Webbing: 100.0% Polypropylene ; Bag cover: 100.0% Polyester ; Coating: 100.0% Polyurethane
Dimensions
Bag dimensions when in use: Height : 65 cm / 26 in Width: 35cm / 14 inDepth: 30 Cm/12 inBack length (= distance 7th vertebrate - ilium): Minimum: 39 Cm/15 in Maximum: 51 Cm/20 in The waistband:Minimum: 74 Cm/29 in Maximum: 144 cm / 57 in
Weight
1.3 kg All inclusive. Weight of the removable rain cover 100g.Weight of the removable lid 100g.i.e. 1.1 kg in simple mode!
Air design
Inspired by its sister, the MT500 AIR, this bag replicates many of the features of its ventilated back structure with a mesh fabric so that the back can breathe more and dry quickly.
Capacity
Volume of 45L with a +10L extension. The volume of each backpack is measured using a standardised method. we use small balls to fill the main compartment as well as each pocket. The balls are then emptied into a graduated container in order to determine the equivalent volume in litres, with a margin of error of just a few %.
How to pack a backpack?
Put your bedding at the bottom. Put heavy gear (tent, camp stove, food) near your back. Store your clothing around it. A groundsheet or tent can be placed under the flap or under the bag if there isn't room inside. Keep your waterproof jacket and fleece to hand. Place small items for daily use (sun cream, map, glasses etc.) in the pockets. The water bladder can be placed in the compartment provided down the back.
How to use the multi-use straps?
The new MT500 AIR and MT900 UL series of trekking backpacks have two straps with open aluminium buckles (on the lower part of the bag). These straps let you hook on a tent or mattress under the bag or on the barrel. If not in use, these straps can be stored (by pushing them inside) in the hidden pocket intended for this or detached and used elsewhere with the lark's head knot buckle.
Complementary accessories
To make it easier to use your MT900 UL bag, check out our storage accessories, our repair buckles and hanging straps. check out our accessories
Recommended carry weight
According to the project for which this backpack was designed, we recommend you don’t load it above 12 kg. Then you can benefit from all its features. Moreover, it’s not recommended to carry a load greater than 20-25% of your own weight and put too much pressure on your back.
Female body shape
Our women's models are adapted to their body shape (chest and hips) with a more open shoulder strap shape and a higher fitted belt for greater comfort and freedom of movement.
Product testing
All our backpacks are field-tested by users who represent the target market in conditions identical to those found in typical use. In particular, our Test Missions bring together the product manager with people who are not affiliated with DECATHLON to test, improve and validate the products. This particular model was tested over a five-week period by trekkers in the Canaries, Pyrenees and the Mont-Blanc mountain range.
Storage instructions
Store your bag in a dry, ventilated place away from direct light.
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs

Women's Ultralight Backpacking Backpack 45+10 L - MT900 UL
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
Order online for
Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
