Looking for a reliable gig bag to protect your Martin GP-14 acoustic guitar This used Martin GP-14 acoustic guitar gig bag is in excellent condition and designed specifically to fit Martin's Grand Performance size guitars. Lightweight yet durable, it offers padded protection with a soft interior lining to guard against scratches and minor impact. The weather-resistant exterior keeps your instrument safe on the go, while adjustable backpack straps and a comfortable side handle make transport easy. Additional storage is available with a large front zippered pocket, perfect for carrying sheet music, tuners, and other accessories. Whether you're heading to a jam session, rehearsal, or storage, this gig bag delivers portability and peace of mind.