On her: Cole Haan Country winter parka with fox trim, $495. Cashmere sweater, $1,060, and nylon pants, $430, both by Jil Sander at select Saks Fifth Avenue stores. Komperdell Titanal high-tensile aluminum alloy trekking poles, $90 at REI. Minolta Activa 8 FM Zoom binoculars, $210 at REI. On him: Victorinox windshirt with Primaloft sport insulation and pockets for PDA and cell phone, $125. Hugo Boss wool-and-Lycra zip-up mock turtleneck, $260 at Saks Fifth Avenue. Victorinox Blaze nylon-and-Lycra twill pants with articulated knees and waterproof internal snow cuffs, $155. Banana Republic rubber-sole, square-toe sport oxfords, $128. Outdoor Research WindStopper gripper gloves with pile-fleece lining, $47 at REI. T-Tech 25-inch Wheel-A-Way duffel bag by Tumi, $295.

Life's a beach - OK, hotel pool - with quick-dry nylon, natural cottons, and plenty of surf style. But do your fellow travelers a favor: Cover up on the way to and fro.

On him: Linen shirt by Hartford, $165 at Stanley Korshak. Polo Sport by Ralph Lauren nylon board shorts, $40 at Saks Fifth Avenue. J.Crew flip-flops, $24. J.Crew beach towel, $25. Bag: Coated-fabric and Napa-leather tote by Tumi, $350. On her: Portofino strapless swimsuit by Theory, $75 at Neiman Marcus. Tommy Bahama striped-cotton pareo wrap skirt, $76. J.Crew sandals, $48.

Engineered materials with gee-whiz names such as HydroDuct, Duofold, Gore-Tex, and DryTouch keep you cozy, not to mention chic, whether you're kayaking, camping, hiking, or biking. Even good ol' sightseeing.