Brooks Beast Mens Running Shoes. Enhance your workout with the Brooks Beast running shoe. Durable synthetic leather and polyester mesh uppers are lightweight and airy for quick drying performance. Ultimate Sockliner promotes a comfortable feel to complement the breathability of the uppers air mesh. Midsoles feature S 257, a foam polymer alloy formulated to resist compression and rebound more quickly than standard EVA. Hydro Flow cushioning in the forefoot and heel absorb shock, while the extended roll bar maintains stability. Longer lasting HPR Plus outsole that features a highly durable and abrasion resistant rubber.