# EQUIPE RS JOHDAH ULTRAZ WINTER BIB TIGHTS S11 > Assos EQUIPE RS JOHDAH ULTRAZ WINTER BIB TIGHTS S11 - Warm water-repellent front, breathable back and close-fitting RacingFit for winter training - Price: 439.00 CHF - Brand: Assos - Category: Knickers / Tights - Availability: in stock - SKU: 11.14.306.18.2XL, 11.14.306.18.L, 11.14.306.18.XL, 2430000020131, 11.14.306.18.S, 11.14.306.18.M ## Assos EQUIPE RS JOHDAH ULTRAZ WINTER BIB TIGHTS S11 These winter bib tights are made for fast training sessions and races when Lake Zurich fog, Bise winds, and drizzle come together. Assos has completely redesigned the **S11** generation and equipped the JOHDAH Ultraz with new **DIAMOND** softshells, targeted weather protection, and maximum breathability. At the front and thighs, **DIAMOND Ultra** in **twinDeck** construction over **OSMOS Light** provides protection, while **DIAMOND Medium** at the lower back seals against spray and insulates at the same time. Add **OSMOS Heavy** on the rear panels and a water- and windproof **Waterskin** coating at the ankles; the result is a noticeably elastic, dry, and warm fit even under high pressure on the pedals. The new **AEPD 11 racingFit** fits like a second skin, reduces seams and pressure points, and easily handles intensive intervals. Available in six sizes from XS to 2XL – ideal for ambitious road cyclists in Switzerland. - Front with **DIAMOND Ultra** over **OSMOS Light** for highly breathable, waterproof cold protection in **twinDeck** construction. - **DIAMOND Medium** panel at the lower back against spray from the rear wheel and for thermal regulation. - Leg backs made from **OSMOS Heavy**: water-repellent and particularly breathable in less exposed zones. - **Waterskin** coating at the ankles as **waterBarrier** against rain and spray, with highly elastic fit. - New **AEPD 11 racingFit** with 360° stability and second-skin aerodynamics for race pace in winter. - **X-Frame** straps stabilize the lower back and seat area during high load changes. - **RS S11** chamois with Shock-Absorb Damping System Mono 9 (9 mm), **3D Waffle**, and **kraterCooler** for support without bulk. - **softCompression Module** for even, pressure-free compression on the torso – even in aggressive riding position. ## Technical Details and Features The fabric architecture is clearly zoned: **DIAMOND Ultra** blocks wind and moisture at the front, the **twinDeck** layering over **OSMOS Light** stores warmth without trapping moisture in the system. At the back, **DIAMOND Medium** combines a storm-resistant membrane with soft insulation, so your core stays dry when the road is wet. On the leg backs, **OSMOS Heavy** provides additional **breathability** and prevents heat buildup in less exposed areas. The **AEPD 11 racingFit** utilizes the greater elasticity of S11 textiles, reduces seams and pressure, and noticeably supports the large muscle groups. The **X-Frame** straps lie gently over the shoulders and prevent the chamois from sagging on long, hard winter sessions. The system is completed by the **RS S11** chamois with 9mm mono platform, **3D Waffle** foam, and **kraterCooler** perforations for a dry-warm microclimate. ## Applications and Benefits The EQUIPE RS JOHDAH ULTRAZ S11 feels at home on fast base rides, intensive intervals, and winter races – from cold morning rides on Uetliberg to long outings over rolling Jura passes. Thanks to high **breathability**, the torso stays dry, effectively reducing cold from evaporating moisture. Combined with the **JOHDAH Ultraz Winter Jacket S11**, it creates a race-oriented winter setup that performs even in changeable Alpine weather. The tight but elastic fit prevents flapping, improves aerodynamics, and supports the muscles at high cadence. For very wet or particularly windy days, the system can be supplemented with matching **ASSOSOIRES Ultraz**. The S11 generation generally focuses more on race fit and climate management – a focus that independent tests of the new S11 lines also highlight. ## Fit and Combination Tips Assos classifies the tights as **racingFit**; they fit tight and work best when you wear only a **Winter Skin Layer** underneath and layer on top depending on temperature. Choose your size so the straps lie flat and the chamois stays stable without creating wrinkles. The six available sizes from **XS to 2XL** cover the common competition and training requirements. For maximum durability, we recommend gentle washing, low spin speed, and air drying – this preserves membrane performance and elasticity of the DIAMOND textiles. Combined with wind- and waterproof overshoes, the **Waterskin** zone at the ankle keeps legs dry and warm. This way you build a sleek, winter-ready setup for Swiss roads – without unnecessary bulk. ## Variants - 11.14.306.18.2XL: in stock - 11.14.306.18.L: in stock - 11.14.306.18.XL: in stock - 2430000020131: in stock - 11.14.306.18.S: in stock - 11.14.306.18.M: in stock --- Source: https://kilometro.ch/en/products/knickers-tights-665/equipe-rs-johdah-ultraz-winter-bib-tights-s11-804