The boss Simone is an invitation to sew a one-piece swimsuit that is stylish, comfortable, and perfectly fitted.
Designed to enhance the silhouette, this model is distinguished by its Chest clips, which allow for precise shaping and natural hold, while maintaining a sleek line.
It is available in Bonnets A, B/C and D/E, to adapt to different body types, with three variations of hats to best adjust the rendering according to your preferences.
Style-wise, Simone proposes two back options, to vary your looks according to your desires, while maintaining a modern and feminine allure.
This model has been designed to be:
- easy to do, even if you're new to sewing swimwear
- Quick to sew count around 3 to 4 hours clothing manufacture
- compatible with a standard sewing machine
The jersey is intended to be fully lined, guaranteeing:
- a better outfit over time
- optimal comfort when worn
- Such meticulous craftsmanship on the inside as on the outside
One partial lining option (front only) is also offered, ideal depending on the fabric used or the desired effect.
The boss Simone is available in:
- Paper sleeve version, for a traditional sewing experience
- PDF version to download, to start immediately
A wardrobe essential, hand-stitched.
With Simone, you're creating a timeless, customisable and durable one-piece – one you'll be proud to wear, season after season.
Idonim's patterns are easy to understand and use. A step-by-step guide with photos will help you make your swimming costume.
You will also find some additional tips and tricks for choosing your supplies (type of needle, appropriate textiles, assembly techniques ...)
Pattern and instructions available in French version only.
The pattern is sold with its instruction booklet for sizes 34 to 50 (FR) / 02 to 18 (US) included
Throughout May, the SIMONE KIDS pattern is free with the purchase of the SIMONE women's pattern – to create a mother-daughter matching set!

















