US: S to United Kingdom Size 7.5
Cross-market women’s glove conversion mapping S specifications into 7.5.

Analyzing Glove Size Equivalence Across Markets
US: S: Features a palm circumference of 18 (7 ), finger length of 7 (2.8 ), hand width of 7.5 (3 ), and hand length of 17 (6.7 ).
United Kingdom Size 7.5: Features a palm circumference of 19 (7.5 ), finger length of 7.5 (3 ), hand width of 8 (3.1 ), and hand length of 18 (7.1 ).