Tech Aphrodite dressage stirrups are a very popular choice for dressage riders who want a stirrup that will enhance their performance in the saddle. Features include:

• Their weight is concentrated in the tread which allows for greater stability
• Patented grip with computer designed angles on the teeth allows for greater freedom of movement for the foot during use. 
• The grip is also designed to prevent the accumulation of mud and water
• The stirrup leather slot is designed to keep the foot in a position that is easy to maintain. 
• Built in screws are flush therefore do not stick out.

They also come in the Comfort Plus version which have a shock absorbing tread, available here.