It seems like size M is a bit small. If there was size L, I would have bought that. The fabric looks a bit flimsy, but considering the price range, I should just be satisfied. If you have a small breed dog, it seems like it would fit perfectly. Our dog weighs 8 kg and has slightly long legs, so the car seat looks small.
Hands-Free Front Carrier for Small Dogs & Cats
Keep your pet close and your hands free. The Hugging Backpack is a front carrier built for small dogs and cats with breathable mesh panels, a built-in safety tether (use with a harness), and wide padded straps with a stabilizing waist/chest strap. Two exterior pockets—including a poop-bag dispenser—keep essentials organized. Lightweight, durable 600D fabric wipes clean and stands up to daily use. Ideal for city walks, errands, public transport, and vet visits. Choose size by chest girth and seated height (see Size Guide).

COMFORT
Active lifestyle
ERGONOMIC DESIGN
Safety

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Breathable Mesh & Calm Visibility
Cross-ventilated mesh panels maintain airflow and visibility, helping your pet stay cool and relaxed

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Smart Storage & Easy Care
Two quick-access pockets keep treats and wipes handy (one with a poop-bag dispenser).

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Ergonomic Straps, Balanced Weight
Wide padded shoulder straps plus an adjustable waist/chest stabilizer distribute weight evenly for comfortable, hands-free wear.