The Size Guide

Well hello!

We know how important it is to choose the right size swimsuit for the mini in your life! So we've put together a comprehensive size guide with detailed measurements.

Our swimsuits, by nature, have a good amount of stretch in them so my advice is that the full height measurement is the most important. If you'd like - you can get a tape measure from the top of your mini's shoulder to their ankle then compare it to our size chart.

If in-between - size up to get the most wear out of your sun suit and if you have any questions at all please email me on holla@cucumber-cool.com

2025 Design Range

Sunsuit Sizing (in CM) Full Height Front Collar to Crotch Arm Length Waist Width Ankle Cuff Width
6-12 Months 58 32 30 25 8
12-18 Months 63 35 34 26 8
18-24 Months 68 38 37 27 8.5
Size 2 72 40 40 28 8.5
Size 3 76 42 42 29 9
Size 4 84 44 44 30 9
Size 5 91 46 46 31 9
Size 6 98 49 48 31 9
Size 7 104 52 51 32 9.5
Size 8+ 110 55 54 32.5 10

2026 Design Range

  • Electric Meow
  • Skella Good Vibes
Sunsuit Sizing (in CM) Full Height Back Collar to Crotch Arm Length Waist Width Ankle Cuff Width
6-12 Months 58 36 30 25 8
Size 1 65 39 35 26 8.5
Size 2 72 42 40 27 8.5
Size 3 77 44 42 28 9
Size 4 83 45 44 29 9
Size 5 89 47 46 30 9
Size 6 95 50 48 30.5 9.5
Size 7 101 53 50 31 9.5
Size 8 109 56 52 31.5 9.5
Size 9 115 59 54 32.5 10.5
Size 10 121 62 56 33.5 10.5