Challenge Parigi-Roubaix:
Paris-Roubaix PRO
size: 700x27, about 29.5mm wide
tread pattern: textured pattern like a road bike tire
construction: 300 tpi, flat protection, non-vulcanized open-tubular construction can be fragle and flat prone
performance on pavement is excellent, it's ultra fast open tubular road bike tire
performance on firm gravel is very good, good cornering and traction and ultra fast rolling
performance on deep or soft gravel is not safe or recommended
durability: below average but could last 1500 miles
ride: ultra smooth and plush