This is a Protec Max Standard alto saxophone case from their value-priced line. My pictures don’t accurately show the color and how nice this case looks, so I included an official photo from Protec’s site.

This case is in excellent condition and I suspect it has never been used.

Durable Nylon Cover with Strong Custom Hardware, Reinforced Stitching, and Quality Craftsmanship.
Adjustable Shoulder Strap
Padded Backpack Straps Built Into a Velcro Fastened Flap on the Back of the Case.
Oversized, Gusseted, Front Pocket with 2 Zipper Pulls and Smaller Front-Side Storage Pocket
Dual Corded Handle Design with Padded Handle Wrap
Velcro Quick Lock Closure
Lightweight frame with Soft, Plush Lining
Interior Accessory Storage Compartment
Separate Neck and Mouthpiece Sections
Durable Molded Rubber Feet
Length: 25” at Longest Point
Height: 11” at Highest Point
Depth: 5” at Bottom, 6” at Top (Not factoring in front and back, exterior pockets.)