Gen 2 and Gen 3 different is that
1) Gen 2 sizing is S/M, M/L, L/XL - size S/M = the middle size of Gen 3 S and GEN M
GEN 3 sizing is S,M,L,XL,XXL,XXXXL
2) no different in material
3) Gen 3 have more colours
4) same price

if you cannot find the size or colour available , you can refer to this listing as well
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