Conditioning Workout

In teams of 2 ( You Go , I Go)
2 rounds, each for time
150 double unders/300 single unders
400m run (200m-200m relay)
100 air squats
400m run
50 toes to bar
400m run
25 burpee box jump overs@60/50 cm
rest 3 min. between the rounds

Goal: sub 19 mins / round
Time cap: 20 mins / round