Size: Twin
Item Dimensions : 79.7"L x 42"W x 41.3"H
Headboard height : 41.4"
Mattress Platform : 76.0"L x 39.3"W
Slats : 10 pcs

Trundle: 70.9"W x 40.6"D x 2.8"H
Trundle Panel : 75.5"W x 9.4" H
Mattress (Trundle): 75.5"L x 39.3"W
Slats : 8 pcs

Main material : Solid pine
Slats/Rail : Plywood

Weight capacity : 420 lbs.( Twin : 220 lbs / Trundle: 200 lbs )
Product weight : 33 kg/72.8 lb

Package Weight:36 kg/79.56 lb
Package Dimension:204.5L x 31.5W x 19H cm / 80.52L x 12.41W x 7.49H inch

You can also download the online instruction as follows:
ASSEMBLY INSTRUCTIONS