Houdini is one of the brands that's been at the forefront of sustainability in fashion for a while now. They only use recyclable fabrics, and this crewneck sweatshirt is no different. Made from a Polartec fabric engineered to retain your body temperature, while the raglan sleeves and four-way stretch allow for easy movement.

Mono polartec power air light sweatshirt,
$160 / $112 by Houdini Sportswear

This sleek T-shirt from Nanamica is a great fundamental base layer. Cut from a Coolmax material, the technology behind the tee will keep you dry and comfortable all day and night. And the subtle ribbing on the crewneck gives this tech piece an understated fashion element.

Coolmax loopwheel jersey tee,
$85 / $55 by Nanamica

I'm personally not the biggest fan of sandals or flip-flops, so mules are the next best option come summertime. This suede pair is made of grained leather with a crêpe rubber sole for maximum comfort. These will look great with relaxed pants or shorts, with or without socks.

Beige slider mules,
$185 / $130 by Padmore & Barnes

A sturdy ripstop nylon hat is perfect for rainy days and is easy to pack for all your summer adventures.This mesh-lined ball cap will protect you from the heat and is quick to dry if you take it for a dip in the pool.

Ripstop five-panel baseball cap,
$29.50 / $26.50 by Madewell