Drake Waterfowl Systems Early Season Technology (EST) Eqwader Two-Tone Shirt features Refuge HS with HyperShield Technology on top with fleece on bottom. Refuge HS (Hard Shell) is another innovative material brought to you by Drake. Combining the toughest and strongest fibers available enables this material to stand up against all of the elements a hunter faces with very little maintenance. 100% waterproof, windproof and breathable, HyperShield is an impenetrable membrane that will shield you from the elements. Taped Seams. Also features Magnetic chest call pouch, License/Key pouch and call separator. Available in Realtree Max 4 Camo with brown fleece at bottom. Sizes M-2XL.