These Castelli leg warmers are rated to UPF 50+, but Castelli reckons they actually block out 99.8% of UV rays, making them ideal if youre looking for some packable protection from the sun.

The UPF 50+ Leg Sleeves use a polyester base which as well as being more effective than nylon at blocking out UV is better at keeping you dry, which means these leg sleeves are good in both cool and warm conditions.

Castelli has kept the construction minimal to eliminate any rubbing seams, and double-sided silicone elastic at the top holds them in place. The sleeves pack up incredibly small making them perfect for big days in the mountains, or when you just want to travel light.

Key features:

• Solare fabric keeps the chill off without causing overheating
• UPF 50+ protection
• Polyester based for excellent moisture management
• Double-side silicone elastic at top for excellent grip
• 8°-18°C / 45°-70°F
• Weight: 121g