Size Guide
Every Instrument in the Korym catalog is measured the same way: Total Length (tip to base), Insertable Length (the usable channel — this is the number that matters for fit), and Diameter at the widest point. Where a spec sheet lists Circumference instead of Diameter, divide by 3.14 to get the equivalent width. Use Insertable Length and Diameter — not Total Length — when comparing sizes across models.
How to Measure Yourself
Wrap a soft measuring tape or a piece of string around the point you'd normally use as a reference (the widest comfortable girth), then lay it flat against a ruler. That circumference number is what you compare against the "Body Width" or "Max Diameter" figures below — not the length figures. Length preference is separate and personal; there's no formula for it.
Fantasy Dildo — Sizing Path
Fantasy Dildo instruments in the Korym catalog run from compact single-size pieces to multi-size (S/M/L) series. The S/M/L split is not a universal standard — each model's S, M, and L are cast at different absolute dimensions. Read the spec table on the product page; do not assume "M" means the same thing across two different Instruments.
Recorded ranges across the catalog's sized dildos:
- S sizes: insertable length 10–29 cm, max diameter 4–5.4 cm
- M sizes: insertable length 11.2–35.5 cm, max diameter 4.9–7.3 cm
- L sizes: insertable length 12–60 cm, max diameter 5.9–8.4 cm
The spread is wide because this category includes both compact anatomical shapes and extreme-depth pieces (one model runs 41–60 cm insertable across its S–L range). If you're new to the category, start with a single-size or S-variant model under 20 cm insertable and under 5.5 cm diameter, and confirm the exact figure on the product page before ordering — the range above is a catalog summary, not a recommendation for any specific model.
Penis Sleeve — Fit Reference
The three Penis Sleeve Instruments in the catalog share a narrow spec band: total length 18–19 cm, inner (wearable) length 15.5–16 cm, head diameter 3.5–4.5 cm, inner diameter 3–3.5 cm. Inner diameter is the stretchable channel that fits over the body — it's designed to expand, so treat it as a minimum rather than a fixed measurement. All three integrate a scrotum loop at the base for retention; loop elasticity is not separately specified per model.
Anal Plug — Progression
Anal Plug Instruments in the catalog are sold in S/M/L sets. Two models with published S–M–L tables show this progression:
- S: insertable length 6.5–12.5 cm, body/head width 3–5.7 cm
- M: insertable length 9–14.5 cm, body/head width 3.8–6.5 cm
- L: insertable length 11.4–16.5 cm, body/head width 5.2–7.8 cm
If this is your first plug, start at S in a model with a body width at or below 4 cm and confirm the exact base/handle design suits hands-free or handheld use as you prefer. Move up a size only once the current one sits without resistance.
On Firmness (Shore Hardness)
Some Instruments list a Shore hardness rating on their individual product page (for example, a single-density Shore A 00-30, or a dual-density Shore A 00-20 construction). Where a product page does not list a Shore number, we do not estimate one — go by the qualitative firmness note in that product's own listing ("soft-plush," "firm," "standard") rather than a number that isn't on record for that model.
A Note on Numbers
Every figure on this page is taken directly from the technical specifications published on the individual product pages. Where a product's page does not publish a dimension, it is not estimated here. Always confirm against the specific product page before ordering — this guide summarizes ranges across the catalog, not a substitute for the individual spec sheet.