It does have one pen stain inside main compartment on the bottom of the bag as shown in photos. 

It measures approx. 

14" tall x 12" wide 7" wide or more when filled.

The REI Brown Canvas Day Hiking Flash Backpack is a versatile and practical option for outdoor enthusiasts. With adjustable zipper straps to sling the bag on your back, this medium-sized backpack is perfect for hiking adventures. The brown color adds a stylish touch to your outdoor gear, while the durable canvas material ensures long-lasting use. While it is not insect repellent treated, this backpack is designed to comfortably carry your essentials while you explore the great outdoors.