Spartan Old School Rubber Scuba Fins Dive Diving Divers Snorkeling Snorkel Si...

These things are great and well built. I am in the navy and going for seal training and using these to get used to them. My research led me to these being closest thing to what they use. So far no issues and are just all around good and seems they will last a long time.

I used these in Navy rescue swimmer school and they are great, definitely tested their durability using them in all water conditions and for long lengths of time, will build up incredible ankle strength for future use as running