The Relay Trainer is based on a tried-and-tested running last and fits true-to-size. We recommend going with your usual size.

The Trainer AD 1 generally fits true to size. They’re designed for a close, supportive fit and may feel a bit snug at first, but will quickly break-in. However, if you have a wide foot we recommend going up a half size.

HIIT Trainer features the same last as the Trainer AD 1 but has a more structured upper and fits true to size. We recommend going with your usual size.

Our shoes are unisex and therefore offer the same fit for women and men. Please note there is one full US size difference between women’s and men’s sizes. For example, if you are a women’s US 10, the equivalent men’s size is US 9.

The Relay Trainer features a classic 8mm heel-to-drop. The Trainer AD 1 and the HIIT Trainer both feature a heel-to-toe drop of 10mm but due to the textured sockliner, they feel closer to 8mm.

Yes, our sockliners are easily removable. So if you need to wear your own orthotics, removing our sockliner to add yours is a piece of cake! However, for the ultimate experience, we suggest you keep them in.

If your shoes are starting to look a little less than fresh, we recommend starting with a firm brush or toothbrush to remove all loose dirt and debris. Then, apply water or cleaning solution to your brush and gently massage the stained area. Check out this detailed cleaning guide.