Based on this product's specifications, here are some alternatives and similar models
Screen protective film Hori ViviDeep for PlayStation Portal (model SPF-200E) – anti-scratch screen protector
Summary description:
Protective screen film Hori ViviDeep (model SPF-200E) designed for the PlayStation Portal. This thin, transparent screen protector reduces scratches and surface wear while preserving touch sensitivity and screen clarity. Easy to apply on the Portal display, it serves gamers who want durable, low-profile protection for handheld streaming and portable gaming use.