# UMA GT Ultraz Winter Bib Tights > Assos UMA GT Ultraz Winter Bib Tights - Warm, wind- and water-repellent women's bib with RX Heavy, NEOS Ultra and magnetic closure - Price: 302.00 CHF - Brand: Assos - Category: Knickers / Tights - Availability: in stock - SKU: 12.14.216.18.S ## ASSOS UMA GT Ultraz Winter Bib Tights The ASSOS UMA GT Ultraz Winter Bib Tights are the warmest, most protective women's long bib shorts in the UMA line and were developed for real Swiss winter days. The continuous **double-layer construction** combines insulating fabrics on the inside with a weatherproof outer layer without restricting freedom of movement on the bike. The **female-specific regularFit** offers a pleasantly compressive feel while remaining practical for long training rides, commutes and weekend outings. The concept is rounded off by the proven **UMA Insert** and a **magnetic closure** below the chest for comfortable on and off. - **NEOS Ultra Softshell** on exposed areas: windproof, highly breathable and water-repellent - **RX Heavy** on the skin side for warmth, moisture management and flexibility - **regularFit** for women: comfort-oriented with light compression - **Magnetic buckle closure** for quick entry and breaks on the go - **Y7 Frame Carrier Bib Tech**: wider, stabilizing straps with Y-back construction - Material composition: **81% PA / 18% EA / 1% PL** - Sizes: **XS–2XL** for broad size coverage ## Technical details and features Inside, ASSOS uses **RX Heavy**, a brushed jersey fabric that traps heat, wicks sweat and adapts to every pedal stroke thanks to high elasticity. On the outside, **NEOS Ultra**, a two-layer **Softshell** with a PU membrane, blocks wind and repels spray while minimizing heat buildup. The **female-specific regularFit** is optimized for the riding position and remains noticeably more comfortable than a racing-oriented second-skin cut. Crucial in practice: the low-profile, **magnetic closure** sits below the chest, making getting in and out easier in the cold. Additionally, the **Y7 Frame Carrier Bib Tech** with broadly executed straps ensures a stable fit without pressure on the shoulder blades. ## Applications and benefits These winter bib tights are made for **long endurance sessions**, training rides and daily **commuting** through windy city sections in Zurich or along Lake Zurich. The combination of **insulation** and **weather protection** shows its strengths in the Bise, variable sleet and cold riding wind without sacrificing breathability. On a road bike, allroad or **Gravel** the pedal stroke stays smooth because the materials follow every movement and there are no zippers at the ankles to get in the way. For a coherent system the tights pair ideally with the **UMA GT Ultraz Winter Jacket EVO**, **Ultraz Winter Gloves** and the **Ultraz Winter LS Skin Layer**. ## Fit & feel The **regularFit** is deliberately comfort-oriented and suits riders who want warmth and protection without sacrificing mobility. The panel layout in lanes supports the thighs, knees and calves, while the **Y-back structure** keeps the straps lying flat and stable. Thanks to the **magnetic closure**, handling remains straightforward even with winter gloves. Available in **XS to 2XL**, the UMA GT Ultraz covers a wide range of body shapes; for a sportier, snug fit the usual ASSOS size is recommended. ## Material and construction insights ASSOS intentionally combines textile-specific properties in the Ultraz: **RX Heavy** brings bulk warmth and a soft hand, **NEOS Ultra** provides structured **wind- and splash-water protection** with high water vapor permeability. This two-layer concept on the frontal and side panels ensures that core body temperature stays stable even when the riding wind increases. Independent tests of the GT Ultraz platform highlight precisely this **two-layer architecture** and the protection of the front panels as key to winter performance. That way comfort remains constant even on long rides, without the tights feeling stiff. ## Variants - 12.14.216.18.S: in stock --- Source: https://kilometro.ch/en/products/knickers-tights-665/uma-gt-ultraz-winter-bib-tights-122