Here’s an incredible Amazon deal for you! Right now this Membrane Solutions Water Filter Straw 4-pack is on sale for $38.98 (reg. $42.98), plus right now there is a $10 coupon on the product page and you can save an extra 10% when you subscribe and save. These have awesome reviews; average buyer rating is 4.7 out of 5 stars!
Membrane Solutions Water Filter Straw 4-pack – only $25.08 ($6.27/straw) with sale, $10 coupon and subscription (reg. $42.98)