Part of Soudal Quick-Step's official team kit, the Sanremo BTW Speed Suit has been developed over the course of a decade, both in the wind tunnel and on the roads of the WorldTour, to pair …

BTW SPEED SUIT CFD and significant testing create the fastest road racing suit, optimized for high speeds when the race splits apart.

The Castelli BTW Speed Suit stands for ‘Balls to the wall’, an expression used by 60s pilots to denote times when they pushed their planes to the limit. This speed suit is intended for days when you going full throttle and giving the race everything.

When every second matters we reach for the Castelli Sanremo BTW Speed Suit to take our performance to the next level. featuring a highly aerodynamic design, the Castelli Sanremo …

Castelli's Sanremo BTW Speed Suit combines aerodynamic performance with road-ready comfort, representing over a decade of development both in WorldTour racing and in wind tunnel testing.

Fast made faster. This road speedsuit brings all the aero performance of a TT suit with the comfort, function, and moisture management needed for the road. Over a decade of development on the roads of the WorldTour and in the wind tunnel. This is the suit that started a revolution.

This fabric has measured up to 12 watts faster than previous versions, and has gotten lighter, with excellent cooling capabilities. The amazing polyester blends used in the Velocity Dry fabric are so effective at keeping moisture out that this suit can be worn in the rain or incredible humidity.

Fast made faster. Part of Soudal Quick-Step's official team kit, the Sanremo BTW Speed Suit has been developed over the course of a decade, both in the wind tunnel and on the roads of the WorldTour, to pair the aerodynamic advantages of a TT suit with the …

The Castelli BTW Speed Suit is for those days where you never drop out of your 53 x 11 or 12. The power is pushed into pedals, a do or die effort. The BTW is when you make a commitment to never giving up until you cross the finish line. Castelli made a speed suit for those cyclists who spend countless hours training for maximum speed and power.

Castelli Bicycle racing suit for more aero performance + with airflow shoulder construction. Model: black 010