Antonyms for the phrase "comes apart at the seams" include "holds together well," "remains intact," and "coheres seamlessly." To describe something that is in good condition and resistant to wear and tear, one might use phrases like "strong enough to withstand pressure" or "built to last." Similarly, to indicate that something is well put together and functions efficiently, phrases such as "well-constructed" and "functioning smoothly" could be used. Additionally, words like "solid," "sturdy," and "durable" could be used to describe something that is far from coming apart at the seams.