The Nano Flex Pro Race Bibshort is the latest iteration of Castelli’s Omloop thermal short.

Taking inspiration from pro riders cutting down knee warmers at Omloop Het Nieuwsblad so they ran to just above the knee, the Omloop was cut longer than normal bibshorts with an extra 10cm of fabric adding a lot of warmth, while also doing away with the need for restrictive gripper elastic. This new bibshort take the same idea but with an updated design for even greater versatility.

The Nano Flex Pro Race Bibshort is made from Castelli’s Nano Flex 3G fabric. This offers the same warmth, softness, and breathability as the fabric used in the original Omloop but it is also water repellent. So now this short ideal for cool and dry days, but it is also superb for wet weather.

Reduced seaming eliminates points where water can enter the short and minimises abrasion. The mesh bibs don’t add warmth so you can dress your upper body for the conditions without worrying about moisture build up.

The bibshort uses Castelli’s Progetto X2 seat pad. This pad features two isolated layers that work in tandem with your body and saddle to eliminate friction while still offering substantial cushioning where it’s needed most.

It’s still a pro tool: this short is identical to the mode supplied to Team Ineos.

Key Features:

• Nano Flex 3G fabric is water repellent, stretchy and warm thanks to luxuriously soft brushed inside
• Reduced seams for comfort and to prevent water from entering shorts during wet rides
• Knee-length cut for extra warmth that doesn’t require gripper elastic
• Highly ventilated mesh bib straps
• Progetto X2 Air seamless seat pad for long hours in the saddle
• 12˚ – 20˚C / 54˚ – 68˚F
• Weight: 205g (Large)

Occasionally, without notice, manufacturers change product design and/or specifications.