Picnic Mat Blocks and StripesThe bestselling Kollab Picnic Mat to share with your family and friends. Finally, a mat that really is big, water resistant and easy to fold! Having been frustrated with most large picnic mats out there that need to be folded up in the exact same way, we designed our picnic mats with an adjustable strap so that they dont need to be folded in any specific way. Just fold or roll it up however you please and adjust the strap to suit. The water resistant