When it s time to upgrade to a bag that satisfies the needs of players faced with summer tours fly dates and stage-to-stage schedules the Road Runner Highway Series Padded Keyboard Porter provides the best value-to-features option. Built with premium materials superior workmanship and thoughtful design it makes traveling and touring easier and safer for your instruments. And with rubber in-line wheels pull handle and slide rails getting to and from the gig has never been easier. A 600 Denier 4-season reinforced covering provides full protection from dings dents and inclement weather while special 25mm internal padding cradles and protects your instrument throughout long travel times and storage. A generous expandable external pocket and zippered sleeve provides plenty of room for all your musical and personal accessories and ultra-comfortable backpack straps and custom designed ergonomic handle offers comfortable cartage — no matter where the road takes you. DescriptionExterior Width Exterior Length Exterior Depth Interior Width Interior Length Interior Depth Weight88 Key Regular 16.54 56.69 6.89 18.7 56.5 6.69 10.38lbs61 Key Regular18.11 45.87 8.27 17.32 42.91 7.09 9.99lbs76 Key Regular18.90 51.97 7.87 18.11 49.61 7.09 11.66lbs88 Key Slim20.08 58.86 8.27 14.76 52.95 6.10 12.28lbs