From backyard boat ramp to AK tent camp, Simms G4 Pro wader is lived in by more professional guides than all others combined. Rugged and ultra-quiet 5-layer GORE-TEX Pro Shell technology in the seat, leg, and waist takes stay-dry to the next level ‚ enhancing your internal A/C capabilities with 25 percent more breathability. In addition, G4s feature the largest zippered chest pockets available on any Simms waders, plus a flip-out tippet tender to keep all your river mainstays in tow. G4 Pro. Guides pick for the future of fishing seasons in session.