We welcome you our brand new 2024 NTB Premium Buoyancy Aids. These have gone back to old school ways with the strongest and thickest 420D fabric for long lasting and harsh use. These jackets are built to last. They come in size specific colours so they are easy to determine who's is who's. Chest Dimensions: XS/S: 71-91cm. M/L: 91-111cm. XL: 111-127cm. 50N.