A molded polymer snap fastener, including a first portion having a plurality of first barbs extending outwardly therefrom, the first barbs each having a first radius R1 and the second portion having a plurality of second barbs extending outwardly therefrom, the second barbs having a second radius R2. The first barbs are arranged along a first substantially circular line, the first substantially circular line having a third radius R3. The second barbs are arranged along a second substantially circular line, the second substantially circular line having a fourth radius R4. The third radius R3 is different from the fourth radius R4 and the second barbs and the first barbs are arranged such that the second barbs fall into spaces between the first barbs when the first portion and the second portion are mated.