Hoka One Speedgoat 5 GTX size 8.5. A workhorse for sloppy, wet conditions, the Speedgoat 5 offers a brand-new upper and enhanced moisture management in the way of a GORE-TEX membrane. Grounded in the same Vibram® Megagrip with Traction Lug for increased grip on loose soil, this trail icon employs a foot-cradling heel bolster, rubber toe cap, and gusseted tongue to keep trail debris at bay.