Verdict from 6.6 hours of research from the internet

606 users: 4.5 / 5

6 reasons to buy

  • A vast majority of users found the Ryka Hydrosphere to be excellent for water aerobics.
  • Many wearers appreciated the fit and support that the trainer offered.
  • The absence of laces and the slip-on construction of the footwear made it easy to put on and take off for a number of buyers.
  • Most purchasers favored the stylish look of the product.
  • The drainage ports in the sole unit were effective in removing water from the shoe interiors, according to some reviewers.
  • The traction of the outsole on wet surfaces and pool floors was also lauded by several people.

1 reasons not to buy

  • People with narrower foot dimensions found the trainer a bit loose.

Bottom line

The Ryka Hydrosphere received wide acclaim from the people who used it for water aerobics and similar activities. It was praised for its support, traction, and ability to drain water. Overall, it was deemed an efficient water fitness shoe.

Tip: see the best training shoes.

User reviews:

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  • The Ryka Hydrosphere is the second hybrid water fitness shoe by Ryka after the Hydro Sport. Both trainers are designed to accommodate activities that involve water or getting wet. They employ the same midsole unit made of CMEVA (compression-molded EVA foam) for lightweight cushioning. It has multiple perforations, or drainage ports, that assist in removing the water from the shoe. The Nitracel footbed adds padding and ensures that debris doesn’t get through the ports.
  • The upper unit of the Hydrosphere offers a completely new design. It now features a lace-free slip-on construction for smooth on-and-off wear. The knit material hugs the foot in a snug way, but it is also made stretchable for the freedom of movement.

The bottom of the Ryka Hydrosphere is lined with sticky rubber. It is meant to render grip on a variety of wet surfaces.

Parting the rubber are the flex grooves. They make sure that the platform bends easily with the foot throughout the training session.

The front portion of the rubber outsole extends up to cover the toes. It creates additional protection against bumps and abrasion in this part of the shoe.

The Hydrosphere employs the CMEVA foam for cushioning. It is made to be lightweight and pliable to accommodate active foot movements.

Several large perforations are placed throughout the unit. They are part of the multi-port drainage system which helps in removing water from the foot chamber. 

The Nitracel footbed is added on top of the midsole inside the shoe. It is perforated to assist the water drainage, but it is still made thick enough to prevent debris from getting inside the trainer.

This Ryka trainer features a slip-on construction with pull tabs on the instep and the heel collar. It makes the process of putting on and removing the trainer fast and easy.

A breathable knit material is used to deliver a sock-like fit. It holds the foot securely when the shoe is on but stretches easily whenever it is needed throughout the movement. The brand also claims this material to be quick-drying and resistant to damage from chlorinated water.

The upper is constructed with a round toe to offer extra space at the front. It allows the toes to splay and wiggle freely inside the shoe. 

Inside, the trainer is lined with soft fabric. It contributes to the comfort and prevents chafing.

Size and fit

True to size based on 61 user votes
Small (3%)
True to size (64%)
Large (31%)
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How Hydrosphere compares

This shoe: 89
All shoes average: 84
57 96
This shoe: $65
All shoes average: $87
$30 $300
Nicholas Rizzo
Nicholas Rizzo

Nick is a powerlifter who believes cardio comes in the form of more heavy ass squats. Based on over 1.5 million lifts done at competitions, his PRs place him as an elite level powerlifter. His PRs have him sitting in the top 2% of bench presses (395 lbs), top 3% of squats (485 lbs) and top 6% of deadlifts (515 lbs) for his weight and age. His work has been featured on Forbes,, Elite Daily and the like. Collaborating along the way with industry leaders like Michael Yessis, Mark Rippetoe, Carlo Buzzichelli, Dave Tate, Ray Williams, and Joel Seedman.