Measure rather than guess, because dive swimwear is cut closer than high-street swimwear and sizing up "to be safe" tends to cause more problems underwater than it solves. Every product page links its own size guide. The cropped rashie, scuba leggings, string bikinis, swim trunks and cheeky bottoms run 2XS to 6XL. One-pieces, full-length rash guards and high-waisted bottoms currently run XS to 3XL.

They are designed for diving first. That means seams that do not dig in under a BCD strap, bottoms that stay put under your wetsuit through a giant stride, and fabric that will not roll or bunch when you pull a wetsuit over it. They work perfectly well on the beach too, but the fit decisions were made for the water.

Yes. All four whale shark prints are available as a one-piece swimsuit, in sizes XS to 3XL. If you want full coverage above 3XL, the cropped rashie paired with high-waisted or cheeky bottoms gets you there and runs to 6XL.

• Electric Whale Shark is the boldest and one of our original prints
• Whale Shark Constellation is named for the spot patterns researchers use to
  identify individual animals, is a best seller and comes in blue and pink.
• Whimsical Whale Shark is the softest and most illustrative.
• Whale Shark Blues is the most muted, for people who want the animal without the
  statement.

Each piece will have a detailed description of what materials it is made from, but most of them are made from recycled polyester, which is spun from post-consumer plastic bottles. One honest caveat we would rather say out loud: recycled polyester is still polyester, and it still sheds microfibers in the wash. A wash bag helps. Recycled is a better choice than virgin plastic, not a perfect one.

Everything is made to order, which is how we avoid producing stock nobody wanted and sending the surplus to landfill. Production takes 5-7 business days on average before dispatch. If you need it for a specific trip, order earlier rather than later.