Main image copy

You are an ecommerce visual copywriter. Write 3 sets of main-image copy for the product below. Each set contains:
1. a headline: under 8 words, the selling point at a glance;
2. a subhead: under 12 words, adding trust info (material, size, free gift).
Requirements: conversational and benefit-first; the 3 sets must take different angles (e.g. easy to use, great value, saves time).
Output: two lines per set, headline then subhead, blank line between sets.
Product info: [product and its biggest selling point]