Mammut Blackfin III Mid DT Women's Winter Boots

MAMMUT DRYtechnology™ fabrics are made with special membranes that provide excellent air permeability while remaining completely waterproof and windproof. DRYtechnology™ products have a water resistance rating of at least 10,000 mm.

• Fully waterproof PU membrane with glued seams
• Aluminum thermal insulation
• Vibram sole

• Weight (UK 5.5) 510 g
• Good for: Hiking
• Flex index A6
• Standard lacing
• Sole: Vibram® 4 Trek
• Material PU protection
• Lining: Mammut Dry Technology
• Thermal insulation (EN ISO 20334) -25 °C
• Heel - toe drop: 14 mm

• Fair Wear. Fair Wear works to ensure fair and safe working conditions in garment factories. The non-profit organization works directly with factories, unions, NGOs and governments to protect workers' rights.
• DWR without PFC. (Durable Water Repellent) water-repellent treatment without PFC. Perfluorinated compounds (PFCs) are often used for waterproofing, but they are virtually non-biodegradable. Mammut is committed to replacing non-biodegradable fabric processing with more sustainable, high-performance alternatives.
• A Bluesign® product. Bluesign® SYSTEM is a solution for sustainable textile production that avoids the use of harmful substances. Bluesign® products guarantee the responsible use of resources with minimal impact on people and the environment.

• After washing, apply a water-repellent coating such as Toko Textile proof.

Mammut footwear size guide

To accurately determine your size, we recommend measuring the length of feet in millimeters.

1. Stand against a wall or other 90-degree vertical plane on the floor with your full weight, heel touching the wall/plane.
2. Mark where the thumb ends.
3. Measure both feet. If your feet are different length, choose the larger foot size. 
4. See the table below.

For hiking shoes, we recommend choosing a shoe at least 1 - 1.5 sizes larger than your everyday shoe size.

In hiking shoes, the toes must not touch the shoe!

This is because after walking for a long time your feet will swell and an otherwise good sized shoe will start to feel tight and short! This is the most common cause of sore feet and toes. In more serious cases, one may even lose their toenails due to an inappropriate hiking shoe size.

Example: Measured foot length in millimeters 250 mm or EU 40. Hiking shoes should be chosen from 260 mm or EU 41 1/3 or UK 9.

Size chart EU Size Millimeters UK size 37 1/3 230 4.5 38 235 5 38 2/3 240 5.5 39 1/3 245 6 40 250 6.5 40 2/3 255 7 41 1/3 260 7.5 42 265 8 42 2/3 270 8.5 43 1/3 275 9 44 280 9.5 44 2/3 285 10 45 1/3 290 10.5 46 295 11 46 2/3 300 11.5 47 1/3 305 12 48 310 12.5 48 2/3 315 13   Do Mammut shoes fit the standard EU size? Mammut shoes run small. On average, 0.7 EU sizes smaller compared to other manufacturers' shoes. Mammut EU sizes are converted from Mondo using Mammut's formula, which differs from the standard international system used by most other brands. We invite you to contact us if you have additional questions!