Outside and Yahoo may earn affiliate commissions on some items promoted through links in the article below. This article originally appeared on Outside

Bose's newest portable Bluetooth speaker is a case study in great things coming in small packages. It measures 7.9 inches long, 3.6 inches high, and 2.1 inches wide and lacks the kind of flashy aesthetics that make you instantly curious. But trust us: you should be.

Travel speakers have historically been the kind of gear that's nice to have, but none that we've tested has ever achieved downright greatness. That's just physics: until now, outside of five- or ten-pound breadbox-size speakers, no brand has been able to pack in enough power to fully envelop you in the music. The SoundLink Flex achieves that--yet weighs only 1.3 pounds and is smaller than a brick.

Bose engineered it with powerful drivers that produce more bass than you'd believe possible. It also has such clear, crisp highs that you may find yourself peering inside expecting to find tiny violinists making that precise, rich sound.

Best of all, you can carry it all day: it lasts up to 12 hours on a charge. Prop it on the picnic table, toss it in your duffel, or hook it to your tent with the webbing loop (provided you're far from other groups). You can even set the SoundLink Flex on your boat and, should it fall off, it will float back to the surface. That's because it's both buoyant and IP67 dust- and waterproof, which means its submersible up to a meter for 30 minutes. Bose's designers also enclosed the front grille in a steel frame, then encased the sides in rubbery silicone, so you can drop it from moderate heights. Use the Bose Connect app's party mode to sync two Bose Bluetooth speakers and distribute the sound in stereo. Still, one SoundLink Flex is impressive enough on its own.

For exclusive access to all of our fitness, gear, adventure, and travel stories, plus discounts on trips, events, and gear, sign up for Outside+ today.

Universally flattering, waist-cinching, smoothing, slimming: You need these in your life.

The model and actor is celebrating their "freedom" after latest life milestone.

With 9,000+ five-star Amazon reviews, you'll want to add this number to your wardrobe...stat.

The shampoo and conditioner set has raked in nearly 14,000 five-star reviews.

Shoppers are reporting less pain thanks to these cloud slippers, which have raked in 11,000+ flawless ratings.

Scoop up a best-selling electric toothbrush for $20 off and a mega-popular blow dryer at a sweet discount.

Get smart, and get this brilliant smart-home speaker — it's earned a five-star rating from nearly 450,000 reviewers!

Be a holiday hero: Stock up on this super-affordable gift for the people on your list who most need to chill out.

Scoop up a Star Wars-themed Instant pot at a discount and get a sweet deal on a mega-popular Fire HD tablet.

This clean skincare favorite with thousands of five-star reviews uses dermatologist-recommended ingredients to treat saggy skin, crow's feet, dark circles and more.