The Brooks Beast 20 is designed to offer stability in your knees to try to reduce strain and pressure on the most injury prone part of a runner's body. Go out and run with confidence. Engineered mesh upper with embroidered saddle and eyestay for a modern look. BioMogo DNA delivers a soft feel underfoot. GuideRails offer support with every step. Full-length Segmented Crash Pad absorbs shock and allows a smooth transition from heel to toe. Wt. 11.7 oz.