Single Lock Core (Part No: A144) weight-estimated Insoles made with Bloom Algae

Insoles made with Bloom Algae technology use sustainable algae biomass without compromising durability or comfort

because these socks offer body-mapped mesh zones

Constructed with features you expect from a traditional mummy bag with additional body mapped insulation to optimize warmth where you need it and minimize pressure points and other 'side effects'

To make things even easier

seam-sealed DryVent 3L shell with a non-PFC durable water repellent (DWR) finish helps keep you dry

Single Lock Core (Part No: A144) weight-estimated Insoles made with Bloom AlgaeSKS stands for Same Key System. These types of cores enable you to lock all your Yakima products with just one key. When replacing a core on your Yakima product, you may need a Control key to remove your existing unlocked core so you can transfer the core to a different Yakima product.