Workout

Warm-up (800)
400 Reverse IM (50 drill/50 swim) 
400 pull (3cb) 

Kick-set (500) 
10 x 50 on 1:00 
...fins ok

Set (500)
5 x 100 
...even free
...odd choice  

Set (1500)
10 x 50 on :50 (max. DPS) 25 Moderate/25 hard 
r: 2:00 
5 x 200 
...Odd broken on 3:00 - r:20 after 100, r: 10 after 150
...even EZ on 3:30 

Set (200)
200 Kick 
...choice
...no fins