From the manufacturer's official website:

Ergonomic innovation is probably more critical to the higher standard of the new 10-speed S.T.I. levers than the added gearing.

The narrower cradle-style perch welcomes the high-on-the-hood riding style and accommodates all sizes of hands.

The shift internals borrow the robustness from our MTB technology which results in a smooth and effortless shift.

Features:

• Newly designed mechanism
• Refined lever hood for improved ergonomics
• Shift stroke movement ergonomically improved
• Effortless Shifting
• Short Stroke Shifting
• Weight: 419g

Shift Lever Specifications:

• Front Double
• Rear 10
• Optical Gear Display Yes
• Flight Deck With Gear Sensor
• Multi-Bearing Construction 2
• Outer casing Lever side:SP41 RD side:SP41 Sealed
• Stainless Cable Yes

Brake Lever Specifications:

• Clamp Band 23.8mm/24.2mm
• Super SLR Yes
• Bracket Material/Finish Engineering Composite
• Lever Material/Finish Aluminum/ Anodized

For more information, please visit this product's webpage.