THE CORE: Left, from left: On her, SIERRA DESIGNS' FORM waterproof-breathable nylon ski pants ($120) keep you dry in powder or spring slush; SOREL CARIBOU boots ($100) mean toasty-warm feet. On him, BONFIRE's FILTER waterproof polyester jacket ($250) protects the down insulation from getting wet, their lightweight nylon PARTICLE snowboard pants ($100) are ideal for warmer spring boarding days, and the OPTIC 3-IN-1 gloves ($89) slide a stylish leather liner into an insulated winter glove; THE NORTH FACE's TAHOE LACE boots ($85) come lined with PrimaLoft insulation so feet stay warm even when wet. On snowshoer, the wool-and-leather ARMO jacket ($1,200) from RLX BY RALPH LAUREN has nine chest pockets for all your stuff; VICTORINOX's polyester OSLO pants ($155) shed water and block freezing winds; BONFIRE's OPTIC 3-IN-1 gloves ($89) are your fingers' best friends; winter trail-running shoes never felt as cozy as TIMBERLAND's SNOW LIZARD INSULATED MID boots ($100); and the clear plastic decks on REDFEATHER's FREEDOM SERIES snowshoes ($149) let you see what you're stomping on. THE CASUAL: On her, wool-and-rayon hat ($58) by BANANA REPUBLIC; lamb's-wool-and-faux-fur hoodie ($68), reversible faux-fur-and-nylon vest ($68), and angora-nylon-and-lamb's-wool scarf ($35) by GAP; wool gloves, stylist's own. On snowshoer, polyester beanie ($25) by SIERRA DESIGNS; wool ribbed sweater ($50) by THE NORTH FACE. RIGHT: Same clothes as on page 4; leather belt, stylist's own.