very good build quality, beyond my expectations. The blade is extremely lightweight and angled just right to make surface swimming and fining underwater very easy and efficient. I would recommend this monofin for freediving (for finswimming, its probably best without the blade angle).

Only downside is that the foot pockets are VERY tight when you get the fin. I did get used to them after a few weeks of use, and it seems like the pockets themselvse got the shape of my feet, but it was impossible to keep the fin on for longer than 20 minutes when I just got it. 4 stars!