Sears offers the Fila Men's Rectangle Sunglasses in Black/Brown, model no. SF302CPC2, for $16. Coupon code "FATHER" drops them to $12.80. Opt for in-store pickup at Kmart to avoid the $5.75 shipping fee. That's $19 off and the lowest price we could find. They feature plastic lenses with UV protection.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.