Di2 Battery BT-DN300 Hydration Weight: 128 g

Weight: 128 g

This FINA-approved style smoothes the body into a streamlined shape from the waist to the knees with the added benefit of no stitching for zero chafing and dragging

Waterproof Commuter Footwear Protection

Hands fit firmly and don’t slip in the water

Strong and safe

Di2 Battery BT-DN300 Hydration Weight: 128 gThe new DN300 battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12 speed road derailleurs and shifters (if a fully wired option is selected). With the same size as its predecessor, the slim DN300 battery can be housed inside seat posts or frames ensuring a clean aesthetic. Now with 3 ports, the DN300 simplifies wiring to front and rear derailleurs, supplying