Women's Base Layer Long Sleeve Shirt

Regular price$219.00

Intelligent performance enhancement and insulation for winter sports. Fully featured with our latest technologies to boost your performance and endurance.

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Size chart







Chest (in cm) 77-83 83-89 89-95 95-101 101-107
Waist (in cm) 59-65 65-71 71-77 77-83 83-89
Chest (in inch) 30-33 33-35 35-37 37-40 40-42
Waist (in inch) 23-26 26-28 28-30 30-33 33-35
Reflects body heat

Stay warm and cozy anytime, anywhere! This product reflects your body heat, keeping you comfortable in the coldest weather.

Regulates body temperature

Maintain your core body temperature at 37°C, keeping you cool when you're warm and warm when you're cold.

Optimal ventilation

Keep your body optimally ventilated during sports. Our patented technologies remove moisture and keep you comfortable.

Freedom of movement

Enjoy full freedom of movement, without restrictions or limits. Move with confidence and style!

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Product weight 230G-8.11OZ
Fabric Content 63%Polyester, 32%Polypropylene, 5%Elastane

Free EU shipping on orders over €150 (Italy over €75)
Shipping costs from €7, depending on country. Shipping time approximately 3-6 days.

Free Switzerland Shipping on orders over CHF150. Shipping time approximately 4-5 days

Free US shipping on orders over $200. Shipping time approximately 4-6 days


Developing the ultimate functional sportswear is not enough for us. Our goal is not only to provide you with the best gear in the high performance sports world, but also to ensure that your investment meets all your needs, requirements and expectations while performing at its best. We offer a two-year X-Bionic warranty on our revolutionary products.

Most Important Information

X-BIONIC® RADIACTOR 4.0. Shirt Round Neck Long Sleeve Women

  • RADIACTOR 4.0. PERFECT COMPANION IN EXTREME COLD. Lighter decision layer with shorter drying time, highest cooling and heat capacity, reduced volume and many high-tech functions.
  • ONLY WITH X-BIONIC® 4.0: INNOVATIVE RETINA® ULTRA-HIGH-DEFINITION TECHNOLOGY. Provides ultra-high definition texture, ultra-high density function transmission and ultra-high precision body zoning.
  • AWARD-WINNING, PATENTED 3D BIONIC SPHERE® SYSTEM WITH THERMOSYPHON® TECHNOLOGY. Features complex 3D structures of inner and outer air channels. It cools when you sweat and warms when you are cold.
  • IDEO-WAISTBAND IDEALLY DESIGNED, ERGONOMICALLY OPTIMIZED. With a higher cut line in the back area keeps the garment in place even with constant movement.
  • 100% PURE SWISS ENGINEERED. Made in Italy. 700+ international awards and test wins, 800+ patent registrations for the products with the "X".

Complete the Set

Women's Base Layer Pants
Women's Helixx Gold
Regular price $69.00 Sale price$52.00


Trust the outstanding thermoregulating effect of X-BIONIC® RADIACTOR 4.0 SHIRT ROUND NECK LONG SLEEVE WOMEN even in extreme cold, while enjoying the incomparable comfort of a super-light fabric. The new 4.0 generation is the first to feature the Retina® ultra-high definition quality for unique accuracy of functionality. The result is an ultra-dense knitted material with a reduced volume that offers full functionality at a pleasantly low weight.

Functional zones with thermoregulating and protective effects are positioned precisely and promote your performance and endurance. The material owes its powerful temperature control effect on cold winter days to XITANIT® 2.0, an even more perfected, heat-reflecting high-tech fiber.

The legendary patented 3D Bionic Sphere® System with ThermoSyphon® technology is more powerful than ever and additionally supports the highly adaptive thermoregulation: complex 3D structures and Y-shaped elements maximize air exchange, cool when you sweat, and warm when you freeze - now even faster and more efficiently than ever before.

X-BIONIC® Partialkompression® uses targeted compression to stimulate muscle function, increase your performance and shorten recovery times. Expansion Ribs® cushion the joints at the elbows providing a warming effect even when the joints are in motion.

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