Hydra Vest Size:S/M 71-166cm Width - D is wider

Width - D is wider than standard

Shoe Science says about Metaspeed Sky 4 Tokyo

Adjustable straps for secured fit (sides and front) + loops to fold straps short

but you’ll be flying to Valhalla

Note: Many shoes share similar spec profiles yet perform differently for every runner

Hydra Vest Size:S/M 71-166cm Width - D is widerHigh quality breathable mesh back to keep you cooler Reflective strips for night time safety + attach LED (not included) 2 Integrated soft flasks with bite valve 16oz (500ml) included 2 flask pockets with adjustable bungees to secure and prevent bounce 2 additional stretchy pockets for easy access to energy bar or gels Emergency whistle Adjustable straps for secured fit (sides and front) + loops to fold straps short Clip to hold bladder tube in place