From your iOS device, simply tap on the image to load the full resolution photo. Then, tap and hold on the full resolution image till you see “Save Image” popup at the bottom of the screen. Tap “Save Image” to add the photo to your camera roll.
If you want to download the image from your computer to use on an iOS device, right click on any of the images and choose “Save As” to download the photo. Then, add the it to your iPhoto photo stream or email the photo as an attachment to use it on your iOS device.
Once you have saved the image in your camera roll on your iOS device, simply open the photos app and find the image you want to set as your background image. Tap on it to view it in full screen. Then, tap on the sharing button in the bottom left corner (looks like this ) and select “Use as Wallpaper”. Move and Scale if desired and tap “Set” when you are done. Choose “Set Home Screen” and enjoy your new background.
Click to go to Premium iPhone and iPod Touch Backgrounds or Premium iPad (Mini) Backgrounds