All of the advanced SST Hybrid BOA features you love, now crafted with breathable knit in the upper for a lightweight feel. The SST 6 Hybrid BOA in black knit features our Hybrid toe protector for longer wear, and a wide toe box that allows for a stable base during your release. Its innovative and popular BOA Fit System has super-lightweight laces you customize to your perfect fit. A twist of the micro-adjustable dial allows you to bowl on without needing to re-tie your laces.; Hybrid toe protector BOA Fit System disc lacing U-throat upper pattern Fixed Goodyear push-off sole Removable S8 slide sole and H5 saw-tooth heel on slide shoe Removable H2 Ultra Brakz heel on push-off shoe S6 sole and H7 heel included in polybag 1 shoe protector included