2UNDR Swing Shift Boxer Brief Size:Medium Aetrex Speed Orthotics are designed

Aetrex Speed Orthotics are designed for runners that want to enhance their competitive edge

Slip on the Wave Rider 26 SSW and experience the balance of unrivaled propulsion and indescribable comfort

Eco Friendly Materials

our gender shaping and tuned Action Reaction Technology™ combine to give you the customized fit and performance you deserve to get the most out of every stride

2UNDR Swing Shift Boxer Brief Size:Medium Aetrex Speed Orthotics are designedThe Swing Shift caresses the skin with the finest beechwood fibre in our signature modal fabric. Additionally, the material resists shrinkage and is less likely to fade or pill. Perfection in your pants. The Swing Shift caresses the skin with the finest beechwood fibre in our signature Modal fabric. Pure heavenly softness. Perfection in your pants. Patented Joey Pouch for support and comfort No Drip Tip with hydrophobic membrane for a dry environment