I recently bought the largest of the Plain Depth Trainers and I am now able to sink it in except for about 2-3 inches. Its an amazing mind blowing ride, I don't know why I waited so long! Thanks. 

Thomas. 

Curved Depth Trainer

Curved Depth Trainer
from £90.00
from £90.00
Plain Depth Trainer - 6 Sizes

Plain Depth Trainer - 6 Sizes
from £75.00
from £75.00
Silicone Depth Trainers - 4 Sizes

Silicone Depth Trainers - 4 Sizes
from £96.00
from £96.00