The grip of our soles is certified. To be awarded certification, the boots must pass laboratory tests to assess the grip rate on different surfaces (Smooth, Rugged, Dry, Wet). To validate these tests, we assess the quality of our soles in the field, in the mountains, by a panel of representative testers over 500 km

This boot has been validated by a waterproofing test at 30,000 repeatable flexes, i.e. 15 km - 6 hours of walking, in water up to the mid-upper, which today guarantees a very good level of waterproofing for your boots. --> Our assessment indicates a LEVEL OF 3/5 giving 6 hours of waterproofing when hiking in the rain. The details of tests carried out to assess the waterproofing of our boots is below, in the features section.

The waterproofing of boots is often compromised because water gets in at the collar of the boot. To keep your feet dry for longer, it is therefore advisable to use a waterproof gaiter or mini-gaiter that will prevent water as well as pebbles, sand, etc. from getting inside through the top. It is advisable to use a waterproof spray several times a year. This restores the original water-repellent properties and prevents staining.

1 / Use a brush and/or sponge to clean the boot and remove any dirt or mud. 2/ Then leave to air dry, away from any heat source. 3/ Finish by using a re-waterproofing spray to keep optimal water-repellency of the upper and extend the life of the boot. Link below for the applicator, also available online https://www.decathlon.fr/p/applicateur-re-activateur-de-deperlance-pour-chaussures/_/R-p-307629?mc=8551

WHICH SIZE SHOULD I CHOOSE? For hiking, do not hesitate to choose one size above your usual size to ensure optimal comfort when going downhill and prevent your toes from hitting the front of the boot. Tip: keep your toenails short and, before descending, check that your lacing prevents your foot from sliding forwards inside the boot.

During the waterproofness test, we test 5 levels of waterproofness: 2,000 flexes (approximately 4 km ,30 minutes of walking) 10,000 flexes (approximately 10 km ,3 hours of walking) 30,000 flexes (approximately 15 km ,6 hours of walking) 50,000 flexes (approximately 20 km ,8 hours of walking) 100,000 flexes (approximately >20 km ,24 hours of walking)

Our boots are laboratory tested according to two successive tests Test 1 / We test the efficiency of the membrane only when it is pressured and placed in water, we check the absence of water on the surface, like when you test a punctured inner tube. Test 2 / Thanks to mechanical arms that simulate walking, the assembled boots are half immersed in water and they complete thousands of flexes to check that the inside of the boot remains dry and it is therefore waterproof.

How to choose your boots: 1. Try both boots on, standing up, wearing the socks you use for hiking. 2. Tighten the laces correctly 3. Check the following two areas of comfort: the base of the heel and the front part of the foot going down. 4. Get up to walk with the boots on. 5. Try on several sizes and several models. 6. Wear your boots for increasingly longer periods to wear them in

These boots were co-designed with passionate trekkers, each bringing their own special skills. For example, one of our co-designers is a chiropodist who helps us to meet the physiological needs of people's feet and to make sure they are comfortable and safe during treks.

TREK 100 leather boots are manufactured in the European Union, in Romania, in a factory that specialises in making trekking boots. This plant uses only water-based glues with no chemical solvents. Most materials are of European origin. MANUFACTURER: https://grisport.it/company/?lang=en

Decathlon SportsLab contributes to the innovation and design of Decathlon products, by increasing knowledge of the human body in its environment. Our researchers explore the working and needs of sportspeople's bodies as they practice their sport. Thanks to their knowledge of sports sciences, thermal comfort, morphology, perception and sensation, our experts contribute to the safety and well-being of our sportspeople. SPORTSLAB: https://www.youtube.com/watch?v=XpfMJNQSthY

Laboratory tests were conducted to test the following elements: - tearing of the eyelets and straps - bonding of the sole - toxicology - UV resistance - abrasion of the sole and components of the upper - accelerated ageing.

If you do not need a new product or if it doesn't meet your sporting needs, you have 365 days to exchange it or seek a refund in all Decathlon stores.