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:

• Ergonomic design : Refined lever hood for improved ergonomics.
• Robust internal mechanism
• Front double/triple compatible design
• Effortless shifting : Shift effort is reduced on the release lever.
• Short stroke shifting : Inward shift stroke distance is reduced by 10mm.
• 10-speed compatible
• FLIGHT DECK cycle computer compatible
• SIS-SP41 cable housing : The cable housing with silicon grease reduced fiction by 10%.

Sift Lever Specifications:

• Front Double/Triple
• Rear 10
• Flight Deck with Gear Sensor Yes
• Outer Casing
  • Lever side SP41
  • RD side SP41 Sealed
  • Stainless Cable Yes

Brake Lever Specifications:

• Clamp Band 23.8/24.2mm
• Super SLR Yes
• Bracket Material/Finish Engineering Plastic/ Engineering Plastic
• Lever Material/Finish Aluminum/ Clear Coated

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