The Tenga 3D series flips the usual masturbator design inside out — what looks like an abstract sculpture from the outside becomes the internal pressure surface when inverted for use. The stretchable antibacterial elastomer accommodates almost all sizes, and the open-ended design works for solo use or as an addition to partnered hand jobs.

The Polygon's internal surface is patterned with randomly arranged triangular faces and sharp edges — firmer, more pointed stimulation than the smoother variants in the range. Best with plenty of water- or oil-based lube.

Easily cleaned by inverting and rinsing with soapy water or a toy cleaner.

• Size: 48mm × 48mm × 116mm
• Insertion length: stretches to ~249mm
• Insertion width: stretches to ~80mm