In South Africa, mattress sizes generally follow standard dimensions that differ slightly from those in Europe or the US. Here are the common mattress sizes in South Africa:

• Single: 91 cm x 188 cm (36" x 74")
• Three-Quarter: 107 cm x 188 cm (42" x 74")
• Double: 137 cm x 188 cm(54" x 74")
• Queen: 152 cm x 188 cm (60" x 74")
• King: 183 cm x 188 cm (72" x 74")

Extra Length Versions:

- For most mattress sizes (excluding Three-Quarter in some cases), an Extra Length version is available, which adds 10 cm to the standard length:

- Single XL: 91 cm x 200 cm

- Double XL: 137 cm x 200 cm

- Queen XL: 152 cm x 200 cm

- King XL: 183 cm x 200 cm

These measurements are approximate and can vary slightly depending on the manufacturer. The extra length option is popular for taller individuals, especially in Queen and King sizes.