The phrase 'flexible enough for' is correct and usable in written English.
You can use it when discussing the qualities or capabilities of something that allow for it to be used in an adaptable, accommodating way. For example: "This software is designed to be flexible enough for most users to customize their experience."
The system needs to be flexible enough for different disciplines and different publishing models.
The technique had to be flexible enough for the different emotional nuances Mr. Deakins wanted to convey.
But how do you make a home that is flexible enough for those who have been used to separate nests?
The law is flexible enough for the E.U. to seek a compromise exempting all incoming flights from the rules.
But a few days before the performance he decided that his instrument was not flexible enough for recital use.
And though Seuss was reportedly inspired by the situation in post-war Japan when he wrote the book, but its parable is flexible enough for our time.
"It might mean the system is flexible enough for students to go off and do things that are more appropriate for them," he says.
SHOES -- Sneakers or shoes with a cleat that clips in to the pedal, often with soles flexible enough for walking when off the bike.
The questing narrative is also flexible enough for Rhys to fold in some of his older songs, including The Court of King Arthur and If We Were Words (We Would Rhyme), without losing any focus or fun.
"The idea that Europe must add to our competitiveness, not take away from our competitiveness, making sure this isn't just a single currency club but it is flexible enough for countries like Britain with our own currency.
My idea was not to make a traditional prosthetic, but to propose a system that was flexible enough for kids to use, hack and create by themselves and with their friends".
