Get a two-pack of these Stojo 12-ounce Collapsible Travel Cups for $24.99 with $3 shipping at Stack Social. Even with this added shipping fee, this is still the best price we found for two of these leakproof cups by $3. As a bonus, four foldable and reusable straws will be included for free, saving you an additional $12. These silicone cups can hold both hot and cold drinks. They're also dishwasher and microwave safe.