Workout

Warm-up (600)
12 x 50
...odd swim :50
...even kick 1:00

Set (600)
300 swim 
...50 drill/50 swim  
200 kick 3:30
100 IM drill 1:30

Set (1800) 
100 kick 2:00
2 x 100 1:30
...des 1-2
200 kick 4:00
4 x 100 1:30
...des 1-2,3-4
300 kick 6:00
6 x 100 1:30
...des 1-3,4-6

Cool-down (200)
200 Choice