the one jersey that i have which is a mens i like having the elastic on it. keeps the cold wind out and the jersey down.

the jacket that i have isn't as long and doesn't have elastic on it. i get a cold breeze up my back all the time.

with the wind out here i like having the elastic, but if i was anywhere else or had a woman's jersey i don't know. i'd have to try it and see, but as of right now i like the elastic.