Product Features:
- Certified and Tested
- Multiple sizes, shapes fit most applications
- Interlocking or aggressive non-slip surface
- Non-conducting plastic resists oil and most chemicals
- Does not splinter, like wood
- Carrying lanyards provided on all 6' x 7' and 4' x 4' crib blocks
- Made from 100% recycled plastic
- Can be used with Lincoln log mating or pyramid mating
- Made in America
- 30 piece set