Why it worked
The video leverages a popular aesthetic (cheetah print) on a desirable product category (toddler shoes) with a well-known brand, presented in a visually appealing, unboxing-style format.
Product placement
New Balance: ACTS - its interface is operated, it generates or edits something, a visible result comes from it, or someone says what it does for them. Removing it would change what happens in the video.
New Balance: APPEARS - a corner watermark, a channel or studio logo, an end card, a credit, a name on clothing, a repost stamp. Removing it would NOT change what happens in the video.