Self-Adhering Foam Blocks

By Gecko Blocks by Cassidy Labs

Starting at $19.95

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Nontoxic and all fun, these sticky building blocks are coated with a silicone adhesive. They’ll stick to each other and to surfaces (like a counter, the wall, or the bathtub) for a whole new way to build. Washable and water-safe, if they get dirty or lose their stick, just give a rinse to renew.

  • Materials: Foam, food-grade silicone
  • Care: Rinse with water or wipe with moist cloth to remove debris
  • Includes: 10 or 28 self-adhering foam building blocks in varying colors and shapes, 10 Pack comes with mesh storage bag
  • Can be built upwards and sideways
  • Cling power never fades, wipe off or rinse with water to renew stick
  • Nontoxic, non-chemical adhesive technology
  • Blocks stick to each other, glass, bathroom tile, and other hard smooth surfaces
  • Helps children build spatial awareness and experiment with building and gravity
  • Great for use during bath time
  • Won’t stick to hands or clothes, won't leave residue
  • Tillywig Brain Child Award Winner 2017
  • Recommended for ages 3+
  • Made in China
  • Dimensions: 10 Pack: 7" x 3" x 3"; 28 Pack: 12.4" x 7.7" x 1.75"
  • Weight: 10 Pack: 0.31 lb.; 28 Pack: 0.88 lb.

12 Reviews (4.9 out of 5 Grommets)

Sorted by Rating

Still Unopened, but looks lkke fun!


I bought the foam blocks for a six-month-old baby. I did not realize till I got and read the box that it’s not recommended for children under three years old. It is on my shelf for two more years. However, I must confess that I am occasionally tempted to open and play with it myself!More > < Less


Grandson loved them!


A perfect set of blocks for little fingers which aren't quite coordinated yet. They avoid the Child getting frustrated by his/her project falling apart before it's finished.More > < Less




I bought two sets of these blocks. Colors and bright and attractive. When they arrived i thought they were a little pricey for the amount of product i received. They are perfect for little ones to play with in the bath they stick to the time walls perfectlyMore > < Less


Great product


Gave to my granddaughter for Christmas. She really hasn't played with them yet. But I took them out of the box and tried them. They stick together and to vertical surfaces. They seem like they will perform as advertised. I think she will love them. Will add to my review when I get a report on how she likes themMore > < Less


Even the grownups enjoyed it too!!


This Christmas I bought these wonderful self-adhering foam blocks for my almost two year old grandson. With so many other toys that he received, I was happy to see that Gecko Blocks kept his interest and motivated. So much so that even the adults got into the action! The bright colors, the different shapes and are the perfect size for little was a winner. Thank you GrommetMore > < Less

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These blocks stick to stuff like a Gecko.

About Gecko Blocks by Cassidy Labs

Adhere Anywhere

These sticky building blocks are made of nontoxic foam that will adhere together or to surfaces. Kids will have a whole new way to create and play—they can easily build up, sideways, or on the wall.

A silicone finish is what gives Gecko Blocks their stick. And it’s what makes them washable and bathtub-friendly. If they get dirty, or start to lose their “stick,” just rinse them off and they’re as good (and sticky) as new.

Co-Founders Scotty and Mike share a passion for discovery, and believe that learning never stops. Their blocks are a fun, and purposeful, twist on beginner blocks. The stickiness is especially handy for little learners just figuring out this building business.

But even in The Grommet family, we had kids up to 8 years old playing with Gecko Blocks. It’s a new take on a classic toy that a whole range of kids will want to stick with.