From Simms:

Simms' long-standing, award-winning wader is back with an exciting update to the material package, improved fit, and an enhanced feature set while remaining the most comfortable, reliable, and performance-driven wader ever.

• Updated material lamination package with even more durable, breathable, and comfortable Gore-Tex 3-layer upper and Gore-Tex Pro 4-layer lower
• Adjustable spacer air-mesh suspender system with a fabric suspender divider and integrated webbing attach point for net carry
• Top access zippered stretch pocket plus zippered, reach-through micro-fleece lined hand-warming chest pocket
• The upper organization also includes a removable Tippet-Tender Pocket and a zippered stretch-woven interior flank pocket on wearer's left
• Built-in low-profile back belt loops with high and low options; 2 inch stretch nylon belt included
• Patented front and back leg seams deliver articulated fit, improved mobility, and increased durability
• Patented, abrasion-resistant, built-in Gravel Guards
• Anatomically engineered neoprene stockingfeet with anti-microbial finish
• Custom options available
• Made in USA of imported materials

FABRIC TECH: Upper: 3-layer waterproof, breathable Gore-Tex Shell; Lower: 4-Layer waterproof, breathable Gore-Tex Pro Shell

Don't hesitate to call with any questions regarding sizing!