http://www.kidstravelhappy.com/SearchResults.asp?Search=write+a+mat&Search.x=0&Search.y=0Learning Mat Crayons from Melissa & Doug are perfect for use on The Straight Edge Learning Placemats. They are carefully crafted using non-toxic coatings. Includes five vibrant, easy-grip crayons. To use, just push the black button on the side of the holder in and slide forward to extend the crayon. Crayon marks are removable with a wet paper towel.

• Approximat Size: 0.75" x 4"
• Approximate Weight: 3 ounces
• Solo Play or Play with Sibling, another Child and/or Adult
• Works best with: if using one of the Learning Placemats, it works best with Room It Up Tray, Three Cheers Trays, but use as just crayons, works well on any tray
• Recommended for ages: 3 and up

WHAT WE REALLY LIKE ABOUT THIS PRODUCT:  the plastic case for each crayon ensures a long life!

THINGS TO NOTE ABOUT THIS PRODUCT:  these are special crayons for wipe-off activities, but will not necessarily wipe off anything!

COOL FACT(S) ABOUT THIS PRODUCT:  adjustable length so no sharpening required!

TRAVEL TIP/OTHER TIDBIT ABOUT THIS PRODUCT: comes with a handy storage case  

TRAY RECOMMENDATION:  any tray

RECOMMENDED MODES OF TRAVEL: any MODE of travel