Summer is here, which means iced coffees, poolside lounging and doing everything possible to keep your drink cold before it turns into a lukewarm disappointment. A reliable water bottle isn’t just a nice-to-have this time of year — it’s essential gear, right up there with sunscreen and sunglasses. Stanley is arguably one of the most popular water bottle brands on the market and right now there are plenty of deals to be found — especially at Amazon and Dick’s Sporting Goods. You can even find certain styles for up to 50 percent off. Check out the best deals below.

The best Stanley deals to shop

On the smaller side, this tumbler holds 20 ounces, making it perfect for everyday carry, desk use or tossing in a bag. It still delivers hours of cold-drink insulation and a tapered bottom to fit into car cup holders. You can use the included straw or sip from the hole in the lid.

Prefer a flip-up straw? This tumbler also holds 20 ounces and has a straw that can be flipped down when not in use. It also has double-wall vacuum insulation to keep drinks cold and a handle for easy carrying.

This water bottle opens in two places — at the shoulder so you can easily fill it with ice and then at the very tip for sipping. The slim, packable design makes it easy to toss in a bag or tote. The stainless steel design keeps drinks cold for up to 11 hours.

A soft-touch handle makes this water bottle easy to tote around with you all day — and the fact that it holds up to 36 ounces will help ensure you stay hydrated. To drink, you just twist off the tip and can sip from this water bottle. It can keep iced drinks cold for up to four days, according to the brand.

This large-capacity, 40-ounce tumbler keeps drinks ice-cold for hours thanks to double-wall vacuum insulation. The lid rotates between three settings — straw, drink opening and full cover — while a comfort-grip handle and narrow base make it easy to carry and stash in a cup holder.

More Stanley deals worth shopping

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I’m a commerce editor at NBC Select who covers various topics, including lifestyle, home and wellness. I’ve covered sales and major shopping events like Amazon Prime Day, Black Friday and Cyber Monday for more than a decade.