Totally Custom Moldable to fit your feet perfectly! Molding them is easy. Sole's variable density EVA base stays firm in the arch and heel (stability) and soft in the toe area (flexibility). When it gets hot in there, SOLE keeps you cool and dry. Also featuring a Deep Heel Cup for stability to align your foot through the heel strike. Most Sole Orthotics will not require trimming. If they do, use your old insole as a guide. Warning: Do not cut them too short. #4 = MEN'S 3.5-4 WOMEN'S 5.5-6 #5 = MEN'S 4.5-5 WOMEN'S 6.5-7 #6 = MEN'S 5.5-6 WOMES'S 7.5-8 #7 = MEN'S 6.5-7 WOMEN'S 8.5-9 #8 = MEN'S 7.5-8 WOMEN'S 9.5-10 #9 = MEN'S 8.5-9 WOMEN'S 10.5-11 #10 = MEN'S 9.5-10 WOMEN'S 11.5-12 #11 = MEN'S 10.5-11 WOMEN'S 12.5-13 #12 = MEN'S 11.5-12 WOMEN'S 13.5-14 #13 = MEN'S 12.5-13 #14 = MEN'S 13.5-14