– Certified and tested
– 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 inch x 7 inch and on 4 inch x 4 inch crib blocks
– Made from 100% recycled plastic
– Can be used with Lincoln Log mating or pyramid mating
– Sold separately or in kits (see table)