We've cracked the performance/durability code with our Quantum line of women's wetsuits, ending the era in which wetsuits compromise in quality. Our game-changing approach starts with quality materials like limestone-based neoprene and specially developed insulation with stretch zones in high-movement areas—what we call our all-new Apex Fit pattern. The upper-body panels are internally reinforced with our flexible THERMO lining and wind-resistant mesh-skin on the chest and back to prevent windchill in exposed areas. The seams of the Women's Quantum Back-Zip 3/2MM Full Suit are 3D stitched and critically taped for maximum security, and the back-zip design allows for easy entry and exit so you won't waste any energy wrestling with your suit and can save it for the lineup. The Quantum will change your expectation of what a back-zip wetsuit can be.