Serfas Thunderbolt 2.0 Tail Light Pumps & C02 Merino wool delivers effective insulation

Merino wool delivers effective insulation at low energy levels and evaporates excess moisture when activity levels rise

The new bottle top on the Swix Thermo Belt makes it easy access your fluids

and combines with the uni-body insole to give you just the right amount of cushioning with a glove like fit

Don't let the winter weather put a damper on your outdoor activities or athletic training with the Yaktrax Pro

Serfas Thunderbolt 2.0 Tail Light Pumps & C02 Merino wool delivers effective insulationThe Serfas True Series light line was developed to be the best on the market. Given the True stamp of approval, these tail lights will meet & exceed their expected lumen output while offering you all the features youve come to enjoy from Serfas lighting. Please welcome the new line of True Series lights & be prepared to turn night into day. Features: Super Bright (50 Lumens) *Daytime Flash Auto Safe Mode Last Mode Memory USB Remote Switch Compatible