You're really not going to be able to find any fabric or stuffy type toys that will survive an aggressive chewer. They are just not made for that and some dogs (mine included) take great joy in seeing how fast they can disassemble one of them. LOL Best luck I have had with "soft" toys of any kind with mine (hard chewers that are 100lbs dogs) are the ones made from firehose and/or jute. They are not immune to being destroyed, but they do last a little longer. Both of my current dogs dislike the rubber kongs, but like the squeezz toys made by Kong for when they want a toy that makes noise. My younger one likes her Kong wobbler and will even play with it when not filled with food. They also both loves balls. We have rubber balls, kong squeaky balls, rope balls and tennis balls....the latter survive sometimes 10 minutes sometimes months....but they play with those daily. I also provide them things that really are meant to be just laid with and chewed hard. Mine like nylabones and deer antlers. I'd get him a few things like that and let him get his chewing satisfied.
regards