Bro, Dave Mullins fins & yours are alike. Probably...same brand, huh!!!
Btw, saw the clip..! Awesome Glide it is. 
Thanks for sharing...
yup, the glide it suppose to save the consuption of O2. new technique i must say, did not expect it to be practice in dynamic with fins, it is usualy practice by competitors in dynamic no fins using the breast stroke.