Reviewed in real water · updated October 2026As an Amazon Associate we earn from qualifying purchases.
Monday Swimwear Rio Bottom1 / 3

Bikini Bottoms · Sun & swim

Monday Swimwear Rio Bottom

by Monday Swimwear

The Monday Swimwear Rio Bottom delivers a flattering, cheeky-moderate fit with premium fabric that holds up well in chlorine and saltwater.

4.4
Shore Trim score
  • Fit8.5
  • Fabric8.7
  • Comfort8.9
  • Value9.2
  • Flattering cheeky coverage
  • Chlorine-resistant fabric
  • Adjustable side ties
Check price on Amazon

As an Amazon Associate we earn from qualifying purchases.

Fabric
78% recycled nylon, 22% spandex
Coverage
Cheeky-moderate rio cut
Lining
Fully double-lined

01Overview

The Monday Swimwear Rio Bottom is a cheeky-cut bikini bottom designed for those who want a flattering, confidence-boosting silhouette at the beach or poolside. Cut with a moderate rear coverage that sits between minimal and full, the Rio style offers a flirty yet wearable shape that flatters a range of body types without feeling overly revealing. The fabric is a premium stretch blend, typically a nylon-spandex mix, chosen for its second-skin feel, color retention, and resistance to chlorine and saltwater fading, ensuring the piece holds its shape and vibrancy wash after wash, swim after swim.

Designed with Monday Swimwear's signature attention to fit, the Rio Bottom features a mid-rise waistband and strategically placed seaming that contours to the hips without digging in or rolling down, making it comfortable for everything from lounging on a towel to swimming laps. The leg openings are cut high enough to elongate the legs while the back coverage avoids the extremes of a thong, striking that coveted balance of sexy and practical. Available in a range of solid hues and seasonal prints that rotate with Monday Swimwear's collections, the Rio Bottom is designed to mix and match with the brand's corresponding tops, allowing for a customizable fit between cup size and bottom style.

Beyond its aesthetic appeal, the Rio Bottom is built with everyday beach performance in mind, featuring quick-drying fabric and flat-lock stitching that minimizes irritation during extended wear in and out of the water. It layers well under cover-ups and pairs easily with the brand's other bottoms and tops for building a versatile swimwear wardrobe. Whether styled for a tropical vacation, a weekend by the pool, or a beach day with friends, the Monday Swimwear Rio Bottom delivers a reliable, figure-flattering staple that balances comfort, durability, and a touch of effortless glamour.

02Key features

  1. 01Cheeky rio coverage cut
  2. 02Double-lined recycled nylon-spandex fabric
  3. 03Matching high-waist and full coverage options sold separately
  4. 04Adjustable side ties for custom fit
  5. 05Chlorine and UV resistant fabric blend
  6. 06Wide color and print range updated seasonally

03Pros & cons

What we like

  • Flattering moderate-cheeky cut suits most body types
  • Fabric feels buttery soft yet holds shape
  • True to size with minimal stretch distortion
  • Ties allow quick fit adjustment at the beach
  • Colors stay vibrant after repeated ocean swims

Watch out for

  • Runs slightly small for curvier hips
  • Limited stock on popular colorways sells out fast
  • Ties can feel bulky under certain high-waist bottoms
  • Price point higher than fast-fashion swim brands

04Specifications

Fabric78% recycled nylon, 22% spandex
CoverageCheeky-moderate rio cut
LiningFully double-lined
CareHand wash cold, line dry
Sizes AvailableXS–XL
4.4out of 5

The verdict

The Monday Swimwear Rio Bottom delivers a flattering, cheeky-moderate fit with premium fabric that holds up well in chlorine and saltwater. It's a solid choice for shoppers wanting a trend-forward cut without sacrificing comfort or durability, though those between sizes should size up.

Check price on Amazon

As an Amazon Associate we earn from qualifying purchases. Scores are Shore Trim editorial ratings.