It looks like they brought some toys

You're just about to make a move on the two lovers, when Anna reaches over to a bag they must have carried with them to the cabin.

"Ready for something a little different?" She asks her friend while picking a pink strap-on dildo from the bag and showing it to her face. It's not the biggest thing you've seen but looks rather cute, especially between Anna's lips while she licks and sucks at it seductively.

"Mmm, yeah...!" Martina smiles back at her while accepting a little taste of the dildo herself.

Moments later the russian beauty is strapping it on, with the harness fitting around her waist and thighs so that it's leaving her pussy free.

Meanwhile Martina gets up on all fours, smiling back over her shoulder while wiggling her sweet ass in the air. A loud moan escapes her as her partner mounts her from behind, easing the strap-on into her wet little snatch.

You watch them hungrily as they keep going. Anna is still on top, turned away from you, and holding on to Martina's hips while eagerly humping away at her pussy.