In the baseball hat videos, women film their significant others wearing normal, forward-facing caps and then no caps, suggesting that these women enjoy both of those looks on their S.O.

AMI Wool Cap, $110, Opening Ceremony, 646-695-5680; Cashmere Baseball Cap, $330, Brunello Cucinelli, 212-627-9202; Gents Cashmere Cap, $75, nordstrom.com ILLUSTRATION: Danny Kim for The Wall ...