Why do track pants have zippers?

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Tags

1. #design
2. #warmer
3. #leather
4. #opening
5. #bottoms
6. #happen
7. #bottom
8. #another
9. #reason
10. #especially
11. #shoes
12. #should
13. #could
14. #months
15. #better
16. #zippers
17. #pants
18. #larger