Workout

Warm Up (600)
3 x 200's  …rest 10 sec.

Set (500)
Swim 10 x 50 on :50
...odds kick/free
...evens build

Set (400)
8 x 50 on :45
...descend stroke count 
...descend 1-4 

Set (1650)
3 rounds
3 x 150 free on 2:00
...descend 1-3
2 x 50 on :40

Cool-down (200)
200 EZ choice