Based on this product's specifications, here are some alternatives and similar models
Threshold guard Springos ACT0056 — EVA foam, black, 43×9×3 cm, 215 g
Summary description:
Springos threshold guard ACT0056 is a black EVA foam protector designed to fit most standard bars and thresholds. It measures 43 cm wide, has a 9 cm outer diameter, 3 cm inner diameter and 3 mm thickness, and weighs 215 g. The non-slip surface and contoured 10 cm cutout ensure secure placement and easy installation; features the Actiget® logo.