U.S. Patent # 4,474,573 (Open Patella) All the great features as the 100 Deluxe Knee Sleeve with the addition of a patella opening for better patella control. Avialable in beige or black, N1 or N2.
Knee Sleeve Size Chart
Measure leg circumference at knee center
12” – 13” = XSmall
13 ¼” – 14” = Small
14 ¼” – 15” = Medium
15 ¼” – 17” = Large
17 ¼” – 18” = XLarge
18 ¼” – 19” = XXLarge
19 ¼” – 20” = XXXLarge