Investors looking for an easy way to make buy and hold investments might want to check out the Australian exchange-traded funds (ETFs) in this article.

They provide investors with easy access to large groups of top ASX shares and were recently tipped as buys by analysts. Here's what you can expect from these ETFs:

Betashares Australian Momentum ETF (ASX: MTUM)

The first Australian ETF that could be a great buy and hold option is the Betashares Australian Momentum ETF.

It provides investors with a momentum strategy over Australian shares and was recently named as a buy by Betashares. This strategy is focused on buying shares that show a recent trend of outperforming the broad market and is based on the theory that rising asset prices often continue rising.

Fortunately for investors, Betashares notes that the index the fund tracks has outperformed the S&P/ASX 200 index by an average of 2.3% per annum since its inception in May 2011. This appears to demonstrate that the strategy works. Commenting on the fund, Betashares' recently said:

Momentum investing is an investment strategy that involves buying companies that have outperformed and selling or avoiding those that have underperformed in the recent past. Rather than aiming to profit from underlying company fundamentals, momentum investing instead is based on the theory that rising asset prices tend to continue rising, and falling prices tend to continue falling.

The initial research on momentum was published by Jegadeesh and Titman in 1993, and has been found to be persistent since that time and pervasive across a range of countries and asset classes.

Firetrail Australian Small Companies Fund Active ETF (ASX: FSML)

Another ASX ETF that could be a quality option for investors is the Firetrail Australian Small Companies Fund Active ETF.

As you might have guessed from its name, this fund gives investors access to the small end of the Australian share market.

Morgans is very positive on the fund and recently named it as one to buy in December. It highlights that the fund is managed by a highly experienced team and offers a high-conviction portfolio of Firetrail's top ideas in domestic small cap stocks. The broker commented:

FSML provides investors with a simple, accessible, liquid and transparent means of gaining access to a higher performance, diversified small cap manager – a sector of the market we at Morgans are particularly bullish on.

Performance-wise, the fund has consistently and handsomely outperformed its benchmark, the S&P/ASX Small Ordinaries Accumulation Index. This impressive track record is further supported by the fund's strong risk management practices and the team's disciplined approach to portfolio construction, making it a solid option for investors looking to diversify their portfolios beyond the mostly fully valued ASX large caps.