Comfort Slides

This model is designed to fit EU size 44 at 100% scale, which corresponds to an approximate foot length of 27.3 cm 👣. To help you resize the model for other shoe sizes, I created a scaling table based on estimated foot lengths 📏.

The foot length for each EU size was calculated using the following formula:

🧠 Foot length (cm) = 15 + (EU size – 25) × 0.667

Once the foot length is known, I calculated the percentage scale you need to apply by comparing it to the base model (EU 44), using this formula:

🔧 Scale (%) = (Foot length for desired EU size / 27.3) × 100

I also included approximate conversions for:

US Men
US Women
CN sizes (based on foot length in millimeters)

📐 CN size = Foot length × 10
🧮 US Men ≈ (EU – 33.5) × 0.625 + 1.5
🧮 US Women ≈ (EU – 31.5) × 0.625 + 3.5

These values are indicative and based on general sizing guides. Actual fit may vary depending on foot shape and filament choice (I recommend bambulab TPU) 🧵🖨️.

EU	US (Men)	US (Women)	CN (mm)	Foot Length (cm)	Scale (%)
34	1.8	5.1	210	21.0	76.9%
35	2.4	5.7	216	21.7	79.4%
36	3.1	6.3	223	22.3	81.8%
37	3.7	6.9	230	23.0	84.3%
38	4.3	7.6	236	23.7	86.7%
39	5.0	8.2	243	24.3	89.0%
40	5.6	8.8	250	25.0	91.6%
41	6.2	9.5	256	25.6	93.8%
42	6.9	10.1	263	26.3	96.3%
43	7.5	10.7	270	27.0	98.9%
44	8.1	11.4	273	27.3	100%
45	8.7	12.0	280	28.0	102.6%
46	9.4	12.6	286	28.6	104.8%
47	10.0	13.2	293	29.3	107.3%
48	10.6	13.9	300	30.0	109.9%
49	11.3	14.5	306	30.6	112.1%
50	11.9	15.1	313	31.3	114.6%
51	12.5	15.8	320	32.0	117.2%
52	13.1	16.4	326	32.6	119.4%
53	13.8	17.0	333	33.3	121.9%
54	14.4	17.7	340	34.0	124.5%
55	15.0	18.3	346	34.6	126.7%

💬 Feedback is very welcome!
If you print a different size, let me know your:

Shoe size
Foot length
Material used
And whether the fit was too tight, perfect, or too loose ✅❌

I'll use your input to update the table and make it even more accurate for everyone in the community! 🙌

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