The folks at Hari Mari have designed a line of flip-flops that are lightweight, durable, great for travel and, more important, help fund research into childhood cancer. Hari Mari’s “Flops Fighting Cancer” initiative sends one percent of all sales to childhood cancer research. Prices for the flip-flops range from $35 to more than $100. I sampled the Hari Mari Dunes ($45) and found them comfortable and great for travel.