Poplin's headline offer right now is a deal on their unisex T-shirt at $17.99. This fixed price point is a great entry option for anyone looking to grab a quality basic tee, though the bigger discounts on the page will suit different shopping budgets and situations.
If you're buying just one or two items under $35, the T-shirt deal at $17.99 is your best bet. You could pair it with the beanie hat at $16.99 for a total of $34.98 before tax, which locks in those promotional prices on both pieces.
If you're filling a larger basket or shopping for multiple items, check the selected products under the up to 58% off promotion. This deal could save you significantly more depending on what you choose. For example, if you're buying several items and some qualify for this discount tier, the percentage off could outpace the fixed price deals, especially on higher-priced pieces. Compare what you've got in your cart against the $17.99 and $16.99 fixed prices to see which gives you the bigger total saving.
If you're a first-time customer, signing up to Poplin's newsletter will get you access to special offers and promotions beyond what's listed here. This is worth doing before you check out, since you can then apply any welcome discount on top of today's deals.
Keep in mind that at checkout, you'll typically be able to use only one offer per purchase, so compare your final basket total under each available option and pick whichever produces the largest discount.