The Xlab Turbo Wing System is the result of an extensive Engineering and Testing program. The Xlab Turbo Wing System is a well made, low cost, easy to use, fast rear carrier with versatile storage.Rear carriers should not interfere with the air on the rider_s back, but instead fill in the turbulence _hole_ behind the riders posterior, thereby reducing the rider_s drag (which accounts for 64% of energy used on a racing bicycle).