Dyan Reaveleys Dylusions Dyalog Notebook Elastic Bands 4 pack - Dyalog Elastic Bands are perfect for stylishly securing and adding additional Dyalog Insert Books, Pocket Inserts, and more in your Dyalog system. The package includes four elastics bands: bubblegum pink, calypso teal, crushed grape and black marble. They measure .13x7.25 inches unstretched. Recommended for ages 18 and up.