I just found this...dont know why I didnt even think to look online before
Carry-on Baggage
Advisory: New security measures have been implemented which necessitate an earlier arrival. See Security Checkpoints for details.
You can carry on one bag plus one personal item per passenger as long as it:
Weighs less than 40 pounds (18 kg).
Does not exceed 45 inches when you total length plus width plus height.
Fits easily into our SizeWise® unit (approximately 22"x14"x9").
Fits in an overhead bin or underneath the seat in front of you.
Here are some examples of personal items:
Male or female purse
Briefcase
Laptop computer (All laptop/computers must be carried aboard and cannot be checked. For information about Delta's battery-saving system for laptops, visit Connectivity)
Camera case
Diaper bag
Items of a similar or smaller size to those listed above, such as Portable Electronic Devices.
These additional items are okay to carry on and don't count towards your allowance:
Food items for immediate consumption
Assistive devices such as wheelchairs or crutches, provided passenger is dependent on them
One box or bag of duty free merchandise
A coat or jacket
An umbrella
One item of reading material
There may be more limits to carry-on baggage based on available space and additional restrictions on certain flights.
Delta