The official gig bag fits the Spark 40 amp perfectly, featuring a water-resistant exterior and padded interior. Take Spark on the go with the official Spark Traveler Bag by Positive Grid. Featuring a water-resistant exterior, a heavily padded interior, durable carrying handles, a removable shoulder strap, and a front zipper compartment for other accessories, this gig bag keeps your Spark safe no matter where you take it. Fits Spark Perfectly. This gig bag fits the Spark amp's dimensions perfectly without any modifcation. Keep Your Spark Safe. Traveler bag features a water-resistant polyester exterior with heavily padded interior, durable carrying handles, and a removable shoulder strap. Fit More. Gig bag also features a front zipper compartment for power adapter, cables, and other accessories.