Vitamin A Swimwear Leah Ribbed One Piece - Marine Stripe Grey

A grey marine stripe is the quietest thing in this collection and probably the most wearable. Soft charcoal against off-white, run vertically through Vitamin A's ribbed knit — the Leah Ribbed One Piece in Marine Stripe Grey reads as nautical without costume, and the vertical line does what vertical lines do. This is the suit for the morning swim off the back of the boat, before anyone has decided what the day is.

The Details

• Brand: Vitamin A Swimwear
• Style: Leah Ribbed One Piece
• Colorway: Marine Stripe Grey
• Fabric: Ribbed knit
• Neckline: Scoop, adjustable shoulder straps
• Leg line: High-cut
• Back: Open, clean-finished
• Coverage: Full seat
• Condition: New with tags

Fit & Sizing — Measure, Don't Guess

Size letters lie. Inches don't. Every designer grades differently, and Vitamin A has re-graded its own range over the years. Here is what this suit is actually cut to — take a tape measure to yourself once and you will never guess again.

How to measure: bust at the fullest point, tape straight across the back; waist at the narrowest part of your torso; hips at the fullest point, 7–8 inches below the waist. Measure without clothing, tape snug and level.

• Between two sizes: size down. The rib has substantial four-way stretch and strong recovery — it gives more than it looks like it will.
• Long torso: the adjustable straps carry real range at the shoulder. One of the few high-leg one-pieces that won't pull down.
• Bust: unlined, unstructured, no underwire. Shape without engineered support — best at a C cup or below.
• The rib texture is more forgiving across the midsection than a flat matte knit, and the vertical stripe reinforces that.
• The high leg sits at the hip bone and lengthens the leg line. It does not cover the upper thigh.
• Note: Small is not available in this colorway. If you sit between XS and Medium, the Medium in a ribbed knit is the safer choice.

Sustainability Details

Vitamin A manufactures in California and builds its collections on recycled and bio-based textiles rather than virgin synthetics. Founded by Amahlia Stevens, the brand has spent twenty-five years arguing that the sustainable choice can also be the technically better one — fabric engineered to hold shape and colour through salt, sun, and chlorine rather than fail after a season.

This suit is new with tags — curated, not manufactured to order. Nothing entered production because you bought it. Around a third of fashion bought online is returned, and most returned swimwear cannot be resold at all. Getting the size right the first time is the largest environmental decision in this transaction, which is why the measurements sit above rather than behind a link.

Care Instructions

• Rinse in cold fresh water immediately after every wear, before salt or chlorine dries in.
• Hand wash cold with mild detergent. Never machine wash.
• Press water out gently — never wring or twist the rib.
• Dry flat in shade. Dryer heat and direct sun are what actually destroy technical swim fabric.
• Let sunscreen and body oil absorb fully before dressing; oils break down elastane.
• Avoid rough teak, concrete, and pool edges — ribbed knits abrade faster than flat ones.

Who It's For

Anyone who wants a neutral they will still wear in five years. Anyone drawn to texture and pattern over saturated colour. Long torsos. Anyone who wants a high leg line with full rear coverage. The first suit to buy if you are building a capsule rather than collecting.

Who It's Not For

Anyone needing underwire or built-in bust support. Anyone above a C cup looking for lift. Anyone who wants coverage at the upper thigh. Anyone who prefers a soft, drapey hand — this rib is structured.