KapsQuality Wooden Shoe Trees Excellent Moisture Absorption and Drying, Keep Shoes Boots in Shape, Unisex

if the womans size is 5 and she needs to extend a little to perhaps 5.5, which size shoe trees should be purchased?

i am between sizes: women's 4-5 (37 - 38). Which size should I go for?

Shoe stretchers for 41/43 mens size 8/9 UK

Will these fit 9.5 UK shoes?