The Castelli Core Drill Shorts are designed for training and racing sprint distance Triathlons, with a 750m swim, 20km bike and 5km run. They're suited to this length thanks to a low-key fleece seat liner taking the place of the less run-friendly seat pad used in many shorts.

During the cycle, the liner will smooth out and add sufficient cushioning to keep you comfortable. When you start to run, it will feel as if it's disappeared. And, being slender, it won't stay wet for long after the swim.

With raw-cut leg endings and flat-lock stitching that will feel soft during all legs, the Core Drill Shorts are perfect for all sprint competitors who value simplicity and comfort.

• Made for sprint Triathlon training and racing
• With a low-key fleece seat liner
• Liner smooths out on the bike, disappears on the run
• Constructed using smooth flat-lock stitching
• With soft raw-cut leg endings
• Silicone grippers anchor leg endings
• Weigh just 116g (M)