2 poches repose-main
Les mains s'y glissent à plat pour se réchauffer en marchant, sans jamais serrer au poignet ni à la paume.
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Sustainability
Our technical clothing is guaranteed for 5 years and can be repaired
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4-way stretch hiking pants that move with your legs from trail walking to climbing, with built-in UPF 50+ protection, made from ECONYL recycled polyamide knitted in Italy and assembled in Lithuania.
Shipping calculated at checkout
The entire collection is guaranteed for 5 years
Free returns within 30 days
Technical specifications
Lightness
UPF50+ Fabric
Activities
Hiking
Climbing
Urban exploration
On a winding uphill trail, then scrambling over a rock slab, it’s often your pants that let you down first: they pull at the knee, cling, and restrict movement. RIOUPOU was built to disappear in moments like these.
Made from recycled polyamide and elastane, its 175 g/m² fabric stretches in all four directions: your leg can lift, bend, and spread without the material pulling back. At 264 g, you’ll forget you’re wearing it after the first few miles, and its light, breathable feel keeps it from getting uncomfortably warm on sunny climbs.
Two hand pockets and a front patch pocket, all with zippers: your phone, map, and energy bar stay put when you sit on a rock or climb over a fence. The belt loops accommodate a slim belt or a climbing harness without getting in the way.
The garment in detail
Les mains s'y glissent à plat pour se réchauffer en marchant, sans jamais serrer au poignet ni à la paume.
Se situe sur le devant, cousue en surface pour rester plate sous une ceinture ou un baudrier serré.
Se ferment complètement pour garder les objets en place, même en terrain accidenté ou en descente.
S'adapte à la morphologie sans serrer sur toute sa longueur, pour un confort en toute saison de marche.
PERFORMANCES
RIOUPOU knit blocks ultraviolet rays thanks to its knit density, achieving an UPF50+ rating through its construction rather than an additive applied as a finish. In practical terms, the protection does not wear off with washing, unlike a surface treatment. This really matters on a day’s hike at altitude or on a ridge run, where radiation is more intense than in the valley.
Despite this, the density of 175 g/m² remains lightweight: the entire pair of pants weighs 264 g. The knit breathes, wicks away moisture produced on the climb, and dries quickly after a shower or a sweaty break, without ever becoming stiff.
4-way stretch changes how the pants move on technical steps: the fabric stretches both lengthwise and widthwise, so a high knee lift, a wide stance on a rocky ledge, or stepping up onto a high foothold puts no strain on the legs. You no longer have to think about pulling them up or readjusting them.
For storage, both hand pockets and the front patch pocket have zippers. Nothing falls out when you sit down, bend over, or brace yourself in a corner. The belt loops complete the design and keep the pants in place without a stiff belt.
Did you know? The ptarmigan, our totem animal, changes its plumage with the seasons: white in winter to blend into the snow, it fluffs up its feathers when the cold sets in. It constantly adjusts its protection, never wearing more than it needs.
RIOUPOU follows the same logic for the lower body: it’s a base layer, worn next to the skin, designed to wick away moisture and let your legs move freely. In fine weather, it’s all you need from start to finish. When the weather turns, it slips under waterproof overtrousers without adding unnecessary bulk, and is slim enough to pull on over technical leggings on cold mornings.
Fit & support
RIOUPOU is a women’s version cut in Active Fit: a close-fitting cut that shapes the leg without squeezing it and stays relaxed around the thigh and calf. The elastane does the rest, and the fabric moves with your stride instead of holding you back.
The belt loops let you add a thin belt if needed and leave room for your harness when a hike turns into a climbing route. The waist stays in place under a backpack, without putting pressure on your hips.
In mild weather, wear it directly against the skin. When the temperature drops, it accommodates a thin technical base layer underneath without pulling tight around the legs.
Coupe Active Fit
Coupe ajustée à la taille et aux cuisses, plus dégagée au niveau du genou pour ne jamais freiner le geste technique. Le bas de jambe reste étroit pour rentrer facilement dans une chaussure de randonnée ou de ski. L'équilibre entre maintien et liberté de mouvement.
SIZE GUIDE
Make your equipment last
Laver en machine à 30°C avec une lessive douce, éco de préférence, et sans excès.
Pas de javel : ni les fibres ni les couleurs n'y survivent, mieux vaut s'abstenir.
Ne pas nettoyer à sec : les solvants du pressing ne lui réussissent pas.
Fermer zips et boutons avant lavage, pour protéger la pièce et le reste de la machine.
Laver avec des couleurs similaires, pour éviter les mauvaises surprises au déballage.
Éviter le sèche-linge : mieux vaut la sécher à l'air libre, sur un cintre de préférence.
Ne pas repasser : cette matière n'apprécie pas du tout la chaleur du fer.
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